Non-peptide NK1 receptors antagonists

ABSTRACT

Non-peptide acetamide derivatives of Formula I are specific NK 1  antagonist,                    
     where R is aryl, R 1  and R 2  are H or alkyl, m, n and q are integers from 0 to 4, X is NR 8  or NHCONH, R 3  and R 9  are H or alkyl, R 4  is naphthyl or indolyl, R 5  and R 2  are H or alkyl, and R 6  is aryl. 
     The compounds are useful agents for treating inflammatory and allergic disorders, pain, anxiety, depression, schizophrenia and emesis.

This application is a 371 Application of PCT/US99/29592 filed Dec. 14, 1999, which claims the benefit of priority to U.S. Provisional Application Serial No. 60/112,725 filed Dec. 18, 1998.

BACKGROUND OF THE INVENTION

The neurokinins are a family of mammalian neuropeptides that are involved with numerous biological activities such as pain transmission, vasodilation, smooth muscle contraction, bronchoconstriction, activation of the immune system, and neurogenic inflammation. One such neuropeptide known as substance P is widely distributed throughout the peripheral and central nervous system of mammals, and is known to mediate a variety of biological actions via interaction with three neurokinin (NK or tachykinin) receptor types known as NK₁, NK₂, and NK₃.

Substance P binds with higher affinity to the NK₁ receptor than it does to the other receptors. Accordingly, compounds capable of antagonizing the effects of substance P at the NK₁ receptor are useful for treating and controlling disorders mediated by such interactions, including disorders such as anxiety, pain, depression, schizophrenia, and emesis.

Since 1991, a number of high-affinity nonpeptide tachykinin antagonists have been reported; for a review see Sprecher A, et al (IDrugs, 1:73-91, 1998).

U.S. Pat. Nos. 5,594,022 and 5,716,979 describe nonpeptides that are relatively specific NK₁ antagonists.

Since substance P mediate various biological actions, including smooth muscle contraction, pain transmission, neuronal excitation, secretion of saliva, angiogenesis, broncho-constriction, activation of the immune system and neurogenic inflammation via an interaction with NK receptors, preferably NK₁, thus compounds capable of antagonising the effects of substance P at NK₁ receptors will be useful in treating or preventing a variety of: brain disorders including pain (inflammatory, surgical and neuropathic), anxiety, panic, depression, schizophrenia, neuralgia, stress, sexual dysfunction, bipolar disorders, movement disorders, cognitive disorders, obesity and addiction disorders; inflammatory diseases such as arthritis, asthma, bronchitis and psoriasis; gastrointestinal disorders including colitis, Crohn's disease, irritable bowel syndrome, and satiety; allergic responses such as eczema and rhinitis; vascular disorders such as angina and migraine; neuropathological disorders including scleroderma and emesis.

The compounds of the invention, NK₁ receptor antagonists, are useful as anti-angiogenic agents for the treatment of conditions associated with aberrant neovascularization such as rheumatoid arthritis, atherosclerosis and tumour cell growth. They will also be useful as agents for imaging NK₁ receptors in vivo in conditions such as ulcerative colitis and Crohn's disease.

SUMMARY OF THE INVENTION

This invention provides NK₁ receptor antagonists characterized as non-peptide acetamide derivatives. The compounds of the invention differ from those of U.S. Pat. Nos. 5,716,979 or 5,594,022 in that the compounds of Formula I below are not (N-substituted aryl-methyl) carbamates, i.e. they do not have a —O—C(O)—N— link in the backbone; certain final products being more stable than known compounds, they should show improved oral bioavailability and improved CNS penetration. The invention compounds are defined by Formula I:

and the pharmaceutically acceptable salts thereof, wherein

▪, , and ▴ indicate all stereoisomers,

R is:

pyridyl,

thienyl,

furyl,

pyrrolyl,

pyrazolyl,

quinolyl,

isoquinolyl,

naphthyl,

indolyl,

benzofuryl,

benzothiophenyl,

benzimidazolyl, and

benzoxazolyl, wherein each of the foregoing is unsubstituted, mono-, di- or trisubstituted by alkyl, hydroxy, alkoxy, halogen, —CF₃, carboxy, sulfonamide, or nitro;

R can also be:

R₁ and R₂ are each independently H or C₁-C₄ alkyl;

m is an integer from 0 to 3,

X is NHCONH, or NR⁸ where R⁸ is H or C₁-C₄ alkyl;

R³ is hydrogen or C₁-C₄ alkyl;

n is an integer from 1 to 2;

R⁴ is naphthyl or indolyl, wherein said groups are unsubstituted, mono-, di- or trisubstituted by

alkyl, hydroxy or formyl;

R⁹ is hydrogen or C₁-C₄ alkyl;

R⁵ and R⁷ are each independently hydrogen or (CH₂)_(p)R¹⁰ where:

p is an integer of 1 to 3, and

R¹⁰ is H, CH₃, CN, OH, OCH₃, CO₂CH₃, NH₂, NHCH₃, or N(CH₃)₂;

q is an integer of 0 to 4;

R⁶ is phenyl,

pyridyl,

thienyl,

furyl,

pyrrolyl,

pyrazolyl,

imidazolyl,

quinolyl,

isoquinolyl,

naphthyl,

indolyl,

benzofuryl,

benzothiophenyl,

benzimidazolyl, or

benzoxazolyl, wherein each of the foregoing is unsubstituted, mono-, di- or trisubstituted by

alkyl,

hydroxy,

alkoxy,

halogen,

CF₃,

NO₂,

N(CH₃)₂,

OCF₃,

SONH₂,

NH₂,

CONH₂,

CO₂CH₃, or

CO₂H,

or R⁶ is:

straight alkyl of from 1 to 3 carbons,

branched alkyl of from 3 to 8 carbons,

cycloalkyl of from 5 to 8 carbons or

heterocycloalkyl,

each of which can be substituted with up to one or two substituents selected from

OH,

CO₂H,

N(CH₃)₂,

NHCH₃ and

CH₃; and

R⁵ and R⁶, when joined by a bond, can form a ring;

R⁶ is also

where X₁ represent the rest of the molecule.

Prodrugs of the above are also contemplated such as would occur to one skilled in the art; see Bundgaard, et al, Acta Pharm Suec, 1987; 24: 233-246. For example, a suitable moiety may be attached to a nitrogen of the linker X, to the nitrogen of the NR⁹ linker, or that of an indolyl radical of R⁴.

Preferred compounds of the invention are those of Formula I above wherein

R is

pyridyl,

thienyl,

furyl,

quinolyl

isoquinolyl

naphthyl,

indolyl,

benzofuryl,

benzothiophenyl,

benzimidazolyl,

benzoxazolyl, wherein each of the foregoing is unsubstituted, mono-, di- or trisubstituted by alkyl, hydroxy, alkoxy, halogen, or CF₃,

m is an integer from 1 to 3;

R⁶ is

phenyl

pyridyl,

thienyl,

furyl,

pyrrolyl,

quinolyl,

isoquinolyl,

naphthyl,

indolyl,

benzofuryl,

benzothiophenyl,

benzimidazolyl, or

benzoxazolyl,

wherein each of the foregoing is unsubstituted, mono-, di- or trisubstituted by

alkyl,

hydroxy,

alkoxy,

halogen,

CF₃,

NO₂

N(CH₃)₂,

OCF₃,

SONH₂,

NH₂,

CONH₂,

CO₂CH₃, or

CO₂H,

cycloalkyl of from 5 to 6 carbons or heterocycloalkyl, with up to one or two substituents selected from OH,

CO₂H,

N(CH₃)₂,

NHCH₃ and

CH₃; and

R⁵ and R⁶ when joined by a bond can form a ring.

More preferred compounds of the invention are those of Formula I above wherein

R is

pyridyl,

thienyl,

furyl,

quinolyl,

naphthyl,

benzofuryl,

benzothiophenyl,

benzimidazolyl, or

benzoxazolyl, where each of the foregoing is unsubstituted, mono-, di- or trisubstituted by alkyl, hydroxy, alkoxy, halogen, or —CF₃,

R¹ and R² are each H;

m is an integer from 1 to 3;

X is NR⁸ or NHCONH, where R⁸ is H or methyl;

R⁹ is hydrogen or alkyl of 1 to 3 carbon atoms;

R⁶ is

phenyl,

pyridyl,

thienyl,

furyl,

pyrrolyl,

benzimidazolyl, where each of the foregoing is unsubstituted, mono-, di- or trisubstituted by

alkyl,

hydroxy,

alkoxy,

halogen,

CF₃,

NO₂,

N(CH₃)₂;

cyclohexyl or heterocycloalkyl, with up to one or two substituents selected from

OH,

CO₂H,

N(CH₃)₂,

NHCH₃ and

CH₃; and

R⁵ and R⁶, when joined by a bond, can form a ring.

The most preferred compounds of the invention have Formula II:

wherein:

R is

benzofuryl,

benzoxazolyl,

3-cyanophenyl,

3-nitrophenyl, or

3-trifluoromethylphenyl;

R³ is hydrogen or methyl;

X is NH or NHCONH;

R⁵ and R⁷ independently are hydrogen or CH₂R¹⁰, where R¹⁰ is H, CH₃ or OH;

R⁶ is

phenyl,

substituted phenyl,

pyridyl, or,

cyclohexyl;

and the pharmaceutically acceptable salts thereof.

Most preferred compounds of the invention are:

2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]

2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-2-methyl-N-(1-pyridin-4-yl-ethyl)-propionamide, [R-(R*,S*)]

2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-2-methyl-N-[1-(4-nitro-phenyl)-ethyl]-propionamide, [R-(R*,R*)]

2-[(Benzofuran-2-ylmethyl)-amino]-N-(2-hydroxy-1-phenyl-ethyl)-3-(1H-indol-3-yl)-2-methyl-propionamide, [R-(R*,R*)]

[R-(R*,S*)]2-[(Benzofuran-2-ylmethyl)-amino]-N-(1-cyclohexyl-ethyl)-3-(1H-indol-3-yl)-2-methyl-propionamide

[R-(R*,S*)]2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-2-methyl-N-(1-p-tolyl-ethyl)-propionamide

2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-N-(1-p-tolyl-ethyl)-propionamide, [R-(R*,S*)]

2-(3-Cyano-benzylamino)-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]

3-(1H-Indol-3-yl)-2-(3-nitro-benzylamino)-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]

3-(1H-Indol-3-yl)-N-(1-phenyl-ethyl)-2-(3-trifluoromethoxy-benzylamino)-propionamide, [R-(R*,S*)]

2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-N-(1-pyridin-4-yl-ethyl)-propionamide, [R-(R*,S*)]

2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]

2-[(Benzoxazol-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide

2-(2-Benzofaran-2-yl-ethylamino)-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)], and

2-(3-Benzofuran-2-ylmethyl-ureido)-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)].

The invention additionally provides pharmaceutical formulations comprising a compound of Formula I admixed with a pharmaceutically acceptable carrier, diluent or excipient therefor. Especially preferred formulations comprise a compound of Formula II. The invention also provides a method for antagonizing NK₁ receptors in a mammal comprising administering to a mammal an NK₁ binding amount of a compound of Formula I. The invention further provides a method for treating a CNS disorder including pain, anxiety, depression, obesity, or schizophrenia; an allergic or inflammatory disease; a gastrointestinal disorder; a vascular disorder; or a neuropathological disorder including emesis; comprising administering to a mammal in need of treatment an effective amount of a compound of Formula I. An especially preferred method of treatment utilizes a compound of Formula II.

DETAILED DESCRIPTION OF THE INVENTION

Throughout this application, the following abbreviations have the meanings listed below:

Boc tertiary butyloxycarbonyl

DCE dichloroethane

DCM dichloromethane

HBTU O-Benzotriazol-1-yl-N,N,N′,N′-tetramethyluronium hexafluorophosphate

DIPEA N,N-diisopropylethylamine

DMF N,N-dimethylformamide

DCC 1,3-dicyclohexylcarbodiimide

EEDQ 2-ethoxy-1-ethoxycarbonyl-1,2-dihydroquinoline

EtOAc ethyl acetate

EtOH ethanol

MeOH methanol

KOH potassium hydroxide

DIBAL Diisobutylaluminium hydride

NMM N-methyl-morpholine

NMR nuclear magnetic resonance

Trp Tryptophan

The term “alkyl” means a straight or branched hydrocarbon having from one to 12 carbon atoms and includes, for example, methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, undecyl, dodecyl, and the like unless stated specifically otherwise.

The term “cycloalkyl” means a saturated hydrocarbon ring which contains from 3 to 12 carbon atoms, for example cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl except as otherwise stated.

The term “alkoxy” means an alkyl as described above attached through an oxygen atom.

The term “halogen” is chlorine, bromine, fluorine or iodine.

The ring formed by joining R⁵ and R⁶ is from 4 to 6 atoms total and is unsubstituted.

The compounds of Formula I are capable of forming pharmaceutically acceptable acid addition salts. All of these forms are within the scope of the present invention.

Pharmaceutically acceptable acid addition salts of the compound of Formula I include salts derived from inorganic acids such as hydrochloric, nitric, phosphoric, sulfuric, hydrobromic, hydroiodic, hydrofluoric, phosphorous, and the like as well as the salts derived from nontoxic organic acids, such as the aliphatic mono- and dicarboxylic acids, phenyl-substituted alkanoic acids, hydroxy-alkanoic acids, alkanedioic acids, aromatic acids, aliphatic and aromatic sulfonic acids, etc. Such salts thus include sulfate, pyrosulfate, bisulfate, sulfite, bisulfite, nitrate, phosphate, monohydrogenphosphate, dihydrogenphosphate, metaphosphate, pyrophosphate, chloride, bromide, iodide, fluoride, acetate, trifluoroacetate, propionate, caprylate, isobutyrate, oxalate, malonate, succinate, suberate, sebacate, fumarate, maleate, mandalate, benzoate, chlorobenzoate, methylbenzoate, dinitrobenzoate, phthalate, benzenesulfonate, toluenesulfonate, phenylacetate, citrate, lactate, tartrate, methanesulfonate, and the like. Also contemplated are salts of amino acids such as arginate and the like. For example, see Berge S. M., et al., Pharmaceutical Salts, J. Pharm. Sci., 66:1-19 (1977) incorporated herein by reference.

The acid addition salts of the compounds of Formula I are prepared by contacting the free base form of the compound with a sufficient amount of the desired acid to produce the salt in the conventional manner. Preferably, a compound of Formula I can be converted to an acidic salt by treating an aqueous solution of the desired acid, such that the resulting pH is less than four. The solution can be passed through a C18 cartridge to absorb the compound, washed with copious amounts of water, the compound eluted with a polar organic solvent such as, for example methanol, acetonitrile, aqueous mixtures thereof, and the like, and isolated by concentrating under reduced pressure followed by lyophilisation. The free base form may be regenerated by contacting the salt form with a base and isolating the free base in the conventional manner. The free base forms differ from their respective salt forms somewhat in certain physical properties such as solubility in polar solvents, but otherwise the salts are equivalent to their respective free base for the purpose of the present invention.

Certain of the compounds of the present invention can exist in unsolvated forms as well as solvated forms, including hydrated forms. In general, the solvated forms, including hydrated forms are equivalent to unsolvated forms and are intended to be encompassed within the scope of the present invention.

Certain of the compounds of the present invention possess one or more chiral centers and each center may exist in the R(D) or S(L) configuration. The present invention includes all enantiomeric and epimeric forms as well as the appropriate mixtures thereof.

The compounds of the present invention can be prepared and administered in a wide variety of oral and parenteral dosage forms. Thus, the compounds of the present invention can be administered by injection, that is intravenously, intramuscularly, intracutaneously, subcutaneously, intraduodenally, or intraperitoneally. In addition, the compounds of the present invention can be administered by inhalation, for example intranasally. Additionally, the compounds of the present invention can be administered transdermally. It will be obvious to those skilled in the art that the following dosage forms may comprise as the active component, either a compound of Formula I or a corresponding pharmaceutically acceptable salt of the compound of Formula I.

For preparing pharmaceutical compositions from the compounds of the present invention, pharmaceutically acceptable carriers can be either solid or liquid. Solid form preparations include powders, pills, tablets, capsules, cachets, suppositories and dispersible granules. A solid carrier can be one or more substances that may also act as diluents, flavouring agents, binders, preservatives, tablet disintegrating agents, or an encapsulating material.

In powders, the carrier is a finely divided solid that is in a mixture with the finely divided active component.

In tablets, the active component is mixed with the carrier having the necessary binding properties in suitable proportions and compacted in the shape and size desired.

The powders and tablets preferably contain from 5% or 10% to about 70% of the active compound. Suitable carriers are magnesium carbonate, magnesium stearate, talc, sugar, lactose, pectin, dextrin, starch, gelatin, tragacanth, methylcellulose, sodium carboxymethylcellulose, a low melting wax, cocoa butter, and the like. The term “preparation” is intended to include the formulation of the active compound with encapsulating material as a carrier providing a capsule in which the active component with or without other carriers, is surrounded by a carrier, which is thus in association with it. Similarly, cachets and lozenges are included. Tablets, powders, capsules, pills, cachets, and lozenges can be used as solid dosage forms suitable for oral administration.

For preparing suppositories, a low melting wax such as a mixture of fatty acid glycerides or cocoa butter, is first melted and the active component is dispersed homogeneously therein, as by stirring. The molten homogeneous mixture is then poured into convenient sized moulds, allowed to cool, and thereby to solidify.

Liquid form preparations include solutions, suspensions and emulsions, for example, water or water propylene glycol solutions. For parenteral injection, liquid preparations can be formulated in solution in aqueous polyethylene glycol solution.

Aqueous solutions suitable for oral use can be prepared by dissolving the active component in water and adding suitable colorants, flavours, stabilizing and thickening agents as desired.

Aqueous suspensions suitable for oral use can be made by dispersing the finely divided active component in water with viscous material, such as natural or synthetic gums, resins, methylcellulose sodium carboxymethylcellulose, and other well-known suspending agents.

Also included are solid form preparations that are intended to be converted, shortly before use, to liquid form preparations for oral administration. Such liquid forms include solutions, suspensions, and emulsions. These preparations may contain, in addition to the active component, colorants, flavours, stabilizers, buffers, artificial and natural sweeteners, dispersants, thickeners, solubilising agents and the like.

The pharmaceutical preparation is preferably in unit dosage form. In such form, the preparation is subdivided into unit doses containing appropriate quantities of the active component. The unit dosage form can be a packaged preparation, the package containing discrete quantities of preparation, such as packeted tablets, capsules, and powders in vials or ampoules. Also, the unit dosage form can be a capsule, tablet, cachet or lozenge itself, or it can be the appropriate number of any of these in packaged form.

The quantity of active component in a unit dose preparation may be varied or adjusted from 0.1 mg to 200 mg, preferably 0.5 mg to 100 mg according to the particular application and the potency of the active component. The composition can, if desired, also contain other compatible therapeutic agents.

In therapeutic use, the highly selective and competitive antagonists of the NK₁ receptor and compounds utilized in the pharmaceutical method of this invention are administered at the initial dosage of about 0.01 mg/kg to about 500 mg/kg daily. A daily dose range of about 0.01 mg/kg to about 100 mg/kg is preferred. The dosages, however, may be varied depending upon the requirements of the patient, the severity of the condition being treated and the compound being employed. Determination of the proper dosage for a particular situation is within the skill of the art. Generally, treatment is initiated with smaller doses, which are less than the optimum dose of the compound. Thereafter, the dosage is increased by small increments until the optimum effect under the circumstances is reached. For convenience, the total daily dosage may be divided and administered in portions during the day, if desired.

The compounds of Formula I can be prepared by any several synthetic processes well known to those skilled in the art of organic chemistry.

In a typical synthesis, a carboxylic acid of the formula

is coupled to an amine of the formula

The coupling can be achieved by routine acylation, e.g. by converting the acid to an acid halide, followed by reaction with the amine, or by utilizing a common coupling reagent such as 1,3-dicyclohexylcarbodiimide (DCC) or 2-ethoxy-1-ethoxycarbonyl-1,2-dihydroquinoline (EEDQ). The synthesis can be carried out on racemic reactants, to provide invention compounds in racemic form, which can then be resolved by conventional methods, if desired. Alternatively, the invention compounds can be prepared in optically active form by using enantiomeric reactants.

In a typical synthesis, an optically active acetic acid is first prepared by conventional methods.

Schemes 1-5 illustrate the preparation of intermediates utilized in Examples 1-5, which illustrate the synthesis of specific compounds of Formula I in optically active form.

Scheme 1 describes the synthesis of intermediates I and II, which are required for Examples 1 to 5. The N-terminal benzofuran moiety is introduced by the reductive amination of either tryptophan methyl ester or alpha-methyl-tryptophan methyl ester with benzofuran-2-carboxaldehyde and sodium triacetoxy borohydride in DCM. The methyl ester is then hydrolyzed to the corresponding carboxylic acid with lithium hydroxide.

Scheme 2 describes the synthesis of intermediate III. 3-Acetyl-1-methyl pyrrole is converted to the corresponding oxime by reaction with hydroxylamine sulfate and potassium hydroxide in water/methanol. The oxime is then reduced on palladium on carbon.

Scheme 3 shows the synthesis of intermediate IV. This compound was prepared from (R)-2-phenylglycinol, which was first N-terminal protected as the carbobenzoxy (CBZ) analogue. The alcohol was then treated with triethylamine and methane sulfonylchloride, followed by dimethylamine to introduce the tertiary amine. Removal of the CBZ protection with hydrogen over Pearlman's catalyst gave the required intermediate.

Scheme 4 describes the synthesis of Examples 1 to 4. Each was prepared by activation of the acid, intermediate I, with HBTU in the presence of DIPEA and then reacting with the required amine in DMF.

The synthesis of Example 5 is outlined in scheme 5. Intermediate I was activated with HBTU in DMF and then coupled with methoxybenzylamine. The methyl ether was then reduced with boron tribromide in DCM.

EXAMPLE 1 2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-2-methyl-N-(1-methyl-1-phenyl-ethyl)-propionamide, (R)

Step 1

Alpha methyl tryptophan methyl ester (26.8 g, 0.115 mol) and benzofuran-2-carboxaldehyde (17.57 g, 0.115 mol) were dissolved in DCM (400 mL) under an atmosphere of nitrogen and sodium triacetoxyborohydride (34.12 g, 0.161 mol) was added portionwise over 20 min at 0° C. The mixture was stirred at room temperature for 2 h and then quenched by the addition of sat. NaHCO₃ (500 mL). The organic layer was collected and the aqueous layer was extracted three times with EtOAc. The organics were combined, dried (MgSO₄), filtered, and evaporated to dryness. The residue was crystallized from ether/heptane to give the product (34.13 g, 82%); IR (film): 3410, 2948, 1724, 1455, 1253, 1104, 742cm⁻¹; NMR (CDCl₃)δ1.48 (3H, s); 3.18 (1H, d, J=14 Hz); 3.21 (1H, d, J=14 Hz); 3.53 (3H, s); 3.85 (1H, d, J=1 Hz); 3.92 (1H, d, J=14 Hz); 6.55 (1H, s); 7.04-7.59 (9H, m); 8.07 (1H, s); MS; ES+ 363, ES− 361.

Step 2 Intermediate I

The methyl ester from step one (24.94 g, 68.8 mmol) was dissolved in dioxan (800 mL) and aq. LiOH (8.66 g, 206 mmol in 400 mL) was added. The reaction mixture was stirred overnight at room temperature and then heated to 60° C. for 5 h. The mixture was reduced in vacuo to a volume of approximately 200 ml. Water (1200 mL) was added and the reaction was stirred vigorously while it was neutralized with 1N HCl. Ether (1200 mL) was added and the mixture was stirred for two h, the precipitate was filtered off, washed with water, ether and dried to give a white solid; (24.5 g, 100%); NMR (Dmso-d₆) 1.28 (3H, s); 3.05 (1H, d, J=14 Hz); 3.07 (1H, d, J=14 Hz); 3.33 (2H, br s); 3.87 (2H, s); 6.72 (1H, s); 6.97-7.07 (3H, m); 7.14 (1H, d, J=2 Hz); 7.18-7.33 (3H, m); 7.50-7.58 (3H, m); 10.89 (1H, s); MS; ES+ 349, ES− 347.

Step 3

Intermediate I (0.348 g, 1 mmol), HBTU (0.379 g, 1 mmol), DIPEA (0.35 mL, 2 mmol) and cumylamine (0.20 g, 1.48 mmol) were stirred in DMF (25 mL) for 18 h. The reaction mixture was evaporated and the residue taken up in EtOAc and washed with 10% Na₂CO₃, and brine. Drying and purification by column chromatography using 20% EtOAc/Heptane gave a white solid (0.285 g, 61%). mp=57-62° C.; NMR (CDCl₃): δ1.40 (3H, s); 1.70 (6H, s); 1.92 (1H, b s); 3.17 and 3.22 (2H 2x d, J=14.4,14.6); 3.82 and 3.89 (2H, 2xd, J=14.6, 14.1); 6.46 (1H, s); 7.02-7.68 (15H, m); 8.10 (1H, s); IR (film): 3317,2987, 1661, 1506, 1455cm⁻¹; [α]_(D) ²³=26.1° (c=1, MeOH); MS(ES⁺) 466 (M+1); Analysis calculated for C₃₀H₃₁N₃O₂. 0.25H₂O: C, 76.65; H, 6.75; N, 8.94%. Found: C, 76.73; H, 6.54; N, 8.80%.

EXAMPLE 2 2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-2-methyl-N-[1-(1-methyl-1H-pyrrol-3-yl)-ethyl]-propionamide, [R-(R*,R*)] and [R-(R*,S*)]

Step 1

3-Acetyl-1-methyl pyrrole (2.00 g, 16.2 mmol) was dissolved in MeOH (60 mL) and treated with potassium hydroxide (4.10 g, 73 mmol) in water (10 mL) and hydroxylamine sulfate (4.00 g, 24.3 mmol) in water (10 mL) and stirred for 18 h. The methanol was removed in vacuo and the residue was diluted with water and extracted with EtOAc. Drying (MgSO₄) and evaporation gave an off-white solid (1.82 g, 81%). (E:Z)=9:1); NMR (CDCl₃): δ2.17 (3H, s); 3.65 (3H, s); 3.69 (3H, s); 6.39 (1H, m); 6.46 (1H, m); 6.56 (1H, m); 6.58 (1H, m); 7.59 (1H, m); 8.10 (1H, bs); IR(film): 3240, 2916, 1644, 1554,1422, 1257, 892cm⁻¹.

Step 2 Intermediate III

The oxime from step one (0.25 g, 1.8 mmol) was dissolved in methanol and 10% Palladium on carbon (50 mg) was added. The mixture was shaken under an atmosphere of hydrogen at 3 psi and at 30° C. for 5 h. Filtering through Kieselguhr and evaporation gave a colorless oil (220 mg) which was a mixture of starting material and product ˜1:1. The crude, intermediate III was used in step 3.

Step 3

Intermediate I (0.348 g, 1 mmol), HBTU (0.379 g, 1 mmol), DIPEA (0.35 mL, 2 mmol) and the amine (Intermediate II) (220 mg, 1.8 mmol) were stirred in DMF (13 mL) for 18 h. The reaction mixture was evaporated and the residue taken up in EtOAc and washed with 10%Na₂CO₃, and brine. Drying and purification by column chromatography using 20% EtOAc/Heptane followed by reverse phase chromatography using 50-100% MeOHMH₂O gave a white solid (0.205 g, 45%); mp=53-57° C.; NMR (CDCL₃): δ1.35 and 1.43 (3H, 2xd, J=6.6 and 6.6 Hz); 1.45 (obs H₂O) and 1.5 (3H, 2xs); 1.89 (1H, bs); 3.21 and 3.22 (2H, 2xs): 3.49 and 3.54 (3H, 2xs); 3.72-3.86 (2H, 2xAB, J=14.4,14.4); 5.05 (1H, m); 6.00 (1H, m); 6.34-7.72 (13H, m); IR (film): 3278, 2969, 1648, 1507, 1455cm⁻¹; MS(ES⁺): 455(M+H) Analysis calculated for C₂₈H₃₀N₄O₄; C, 73.98; H, 6.65; N,12.32%. Found: C, 73.69; H, 6.44; N, 12.12%.

EXAMPLE 3 2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-2-methyl-N-(1-pyridin-4-yl-ethyl)-propionamide, [R(R*,S*)]

Intermediate I (0.174 g, 0.5 mmol), HBTU (0.190 g, 0.5 mmol), DIPEA (0.348 mL, 2 mmol) and the amine (prepared as described in U.S. Pat. No. 5,594,022) (252 mg, 0.6 mmol) were stirred in DMF (25 mL) for 18 h. The reaction mixture was evaporated and the residue taken up in EtOAc and washed with 10%Na₂CO₃, and brine. Drying and purification by column chromatography using 3%MeOH/DCM gave a white solid (0.14 g, 62%). mp=66-69° C.; NMR (CDCl₃): δ1.44(3H,d, J=7.2 Hz); 1.50 (3H, s); 1.96 (1H, bs) 3.12 (1H, d, J=14.4 Hz) and 3.23 (1H, s); J=14.4 Hz); 3.80 (1H, d, J=14.2 Hz) and 3.92 (1H, d, J=14.2 Hz); 5.02 (1H, m); 6.48 (1H, s); 6.89-8.00 (12H, m); 8.03 (1H, s); 8.46(2H, m); IR (film) 3326, 2978, 1660, 1602, 1505, 1455 cm⁻¹; MS(ES⁺) 453 (M+1); [α]_(D) ²³=−29.0° (c=0.39, MeOH); Analysis calculated for C₂₈H₂₈N₄O₂. 0.2H₂O: C, 73.73; H, 6.28; N, 12.28% Found: C, 73.76; H, 6.25; N, 12.08%.

EXAMPLE 4 2-[(Benzofuran-2-ylmethyl)-amino]-N-(2-dimethylamino-1-phenyl-ethyl)-3-(1H-indol-3-yl)-2-methyl-propionamide, (R,R)

Step 1

To a solution of (R)-2-phenyl glycinol (2.11 g, 15 mmol) and benzyl chloroformate (2.35 mL, 16.5 mmol) in THF (30 mL) at 0° C. was added triethylamine (2.30 mL, 16.5 mmol) in THF (5 mL). After stirring for 18 h at room temperature, the mixture was filtered and evaporated to a white solid which was purified by column chromatography on silica using 50% EtOAc/heptane, giving a white solid (4.00 g, 98%); NMR (CDCl₃): δ3.88 (2H, m); 4.85 (1H, m); 5.10 (2H, m); 5.48 (1H, m); 7.23-7.40 (10H, m); IR (film): 3324, 2950, 1687, 1540, 1259cm⁻¹;

Step 2

To a solution of the alcohol from step one (1.00 g, 3.68 mmol) and triethylamine (1.16 mL, 8 mmol) in THF (20 mL) was added a solution of methane sulphonylchloride (0.3 mL, 4.0 mmol) in THF (3 mL). The mixture was stirred for 1 h. 2M dimethylamine in THF solution. (17 mL, 34 mmol) was added and the sealed mixture was stirred for 12 days. Evaporation of the solvent and purification by column chromatography using 2% MeOH/DCM gave a yellow oil (0.399 g, 36%); NMR (CDCl₃): δ2.23 (6H, s); 2.35-2.58 (2H, m); 4.64 (1H, bs); 5.06 (2H, m); 5.77 (1H, bs); 7.20-7.40 (10H, m); IR (film): 3330, 2945, 1716, 1538, 1246, 1050cm⁻¹.

Step 3 Intermediate IV

The protected amine from step one (0.226 g, 0.75 mmol) was dissolved in methanol (30 mL) and Pearlman's catalyst (30 mg) was added. The mixture was shaken for 2 h at 50 psi and then filtered through kieselguhr. Evaporation gave a yellow syrup (0.127 g, 100%); NMR (CDCl₃): δ2.22-2.51 (8H, m); 4.07 (1H, m); 7.22-7.39 (5H, m).

Step 4

Intermediate I (0.174 g, 0.5 mmol), HBTU (0.19 g, 0.5 mmol), DIPEA (0.1 74 mL, 1.0 mmol) and the amine (Intermediate IV) (0.12 mg, 0.73 mmol) were stirred in DMF (15 mL) for 18 h. The reaction mixture was evaporated and the residue taken up in EtOAc and washed with 10%Na₂CO₃, and brine. Drying and purification by column chromatography using 1% MeOH/DCM and reverse phase chromatography using 40-100% MeOH/H₂O gave a white solid (0.10 g, 40%). mp=130-134° C.; NMR (CDCl₃) δ1.44 (3H, s); 2.16 (6H, s); 2.41 (1H, dd, J=5.6, 12.4 Hz) and 2.59 (1H, dd, H=10.0, 12.4); 3.17 (2H, s); 3.86 (1H, d, 14.4 Hz) and 3.92 (1H, d, J=14.6 Hz); 4.95 (1H, m); 6.55 (1H, s); 6.90 (1H, s); 7.09-7.67 (13H, m); 8.01 (1H, s); 8.18, d, J=6.6 Hz); IR (film) 3317, 2934, 1658, 1496, 1455cm⁻¹; MS(ES⁺) 482 (M+1); [α]_(D) ²³=31.9 (c=0.72, MeOH); Analysis calculated for C₃₁H₃₄N₄O₂: C, 75.28; H, 6.93; N, 11.33% Found: C, 75.24; H, 6.92; N, 11.15%.

EXAMPLE 5 2-[(Benzofuran-2-ylmethyl)-amino]-N-(3-hydroxy-benzyl)-3-(1H-indol-3-yl)-2-methyl-propionamide, R

Step 1

Intermediate I (0.348 g, 1 mmol), HBTU (0.379 g, 1 mmol), DIPEA (0.35 mL, 2 mmol) and 3-methoxybenzylamine (0.206 g, 1.5 mmol) were stirred in DMF (17 mL) for 18 h. The reaction mixture was evaporated and the residue taken up in EtOAc and washed with 10%Na₂CO₃, and brine. Drying and purification by column chromatography using 40% EtOAc/Heptane gave a white solid (0.190 g; 41%). mp=42-47° C.; NMR (CDCl₃): δ1.50 (3H, s); 1.90 (1H, bs); 3.20 (1H, d, J=14.4 Hz) and 3.28 (1H, d, J=14.4 Hz); 3.72-3.82 (4H, m); 3.88 (1H, d, J=14.0 Hz): 4.37 (2H, d, J=6.0 Hz); 6.37 (1H, s); 6.75-7.70 (14H, m); 8.12 (1H, s); IR (film): 3322, 2920, 1654, 1602, 1455, 1256cm⁻¹; MS(ES⁺) 468 (M+1); [α]_(D) ^(23.5)=−31.3° (c=1.01, MeOH); Analysis calculated for C₂₉H₂₉N₃O₃: C, 74.50; H, 6.25; N, 8.99%; Found: C, 74.20; H, 6.24; N, 8.78%

Step 2

1.0M Boron tribromide in dichloromethane (0.62 mL; 0.62 mmol) was added dropwise to a solution of the methoxy compound from step one (0.146 g; 0.31 mmol) in dichloromethane at −70° C. under N₂, warmed slowly to room temperature and stirred for 18 h. The mixture was poured onto 10 g crushed ice/2M HCl (15 mL) and stirred for 10 min. Neutralizing with Na₂CO₃, extraction with EtOAc and purification by column chromatography using 40% EtOAc/heptane gave a white solid (0.115 g; 82%). mp=60-69° C.; NMR (CDCl₃): δ1.53 (3H, s); 1.96 (1H, bs); 3.14 (1H, d, J=14.4 Hz) and 3.37 (1H, d, J=14.4 Hz); 3.81 (1H, d, J=14.0 Hz) and 3.93 (1H, d, J=14.0 Hz); 4.14-4.50 (2H, m); 5.23 (1H, bs); 6.32-7.82 (15H, m); 8.14 (1H, s); IR (film): 3333, 2907, 1645, 1599, 1520, 1455, 1254cm⁻¹; MS(ES⁺): 454 (M+1); [α]_(D) ^(23.5)=−25.9° (c=0.73, MeOH); Analysis calculated for C₂₈H₂₇N₃O₃. 0.5H₂O: C, 72.71; H, 6.10; N, 9.08% Found: C, 72.83, 72.86; H, 6.03, 5.96; N, 8.81, 8.83%.

Scheme 6 describes the synthesis of intermediate V, which is required for Examples 6 to 17.

Boc-tryptophan was coupled to alpha-methylbenzylamine using HBTU activation. The Boc group was removed using formic acid in DCM to give Intermediate V.

Examples 6, 8 and 10 to 21 were prepared by a reductive amination of the relative aldehydes and Intermediate V with sodium triacetoxyborohydride as shown in scheme 7.

Scheme 8 outlines the synthesis of Example 7. 2-Benzofuranacetic acid was reacted with ethyl chloroformate in THF and then reduced with lithium borohydride. The alcohol was then converted to the corresponding mesylate and reacted with Intermediate V to give Example7.

Scheme 9 describes the synthesis of Example 9. 2-Hydroxymethyl benzimidazole was reacted with bis(4-nitrophenyl) carbonate in DMF to form the cyclic carbamate. This compound was then reacted with intermediate V to give Example 9.1

The synthesis of Intermediate VI is shown in scheme 10; the intermediate was used to prepare Example 10. Benzo[b]thiophene-2-carboxylic acid was activated with ethyl chloroformate and then coupled with N,O-dimethylhydroxylamine. The Weinreb amide was then reduced to the corresponding aldehyde with DIBAL.

The synthesis of Example 22 is described in scheme 11. 2-benzofurancarboxaldehyde was reacted with hydroxylamine in aqueous potassium hydroxide/EtOH. The oxime was then reduced with lithium aluminum hydride to give the amine. The corresponding isocyanate, prepared by reacting the amine with triphosgene in DCM/pyridine, was reacted with 2-amino-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide to give Example 22.

Scheme 12 shows the synthesis of the key intermediate VII that was used in the a synthesis of Examples 192 to 308. This N-carboxyanhydride was prepared by reacting intermediate I with phosgene in toluene.

Example R¹ R² 6 H 2-Benzofuran-CH₂ 8 H 2-(4,5-Dimethylfuran)-CH₂ 10 H 2-Benzothiophene-CH₂ 11 H 3-quinoline-CH₂ 12 H 2-(5-Cl-thiophene)-CH₂ 13 H (3-SCF₃—Ph)—CH₂ 14 H (3-CN—Ph)—CH₂ 15 H (3-NO₂—Ph)—CH₂ 16 H (3-OCF₃—Ph)—CH₂ 17 H (3-OH—Ph)—CH₂ 18 CH₃ 2-Benzofuran-CH₂ 19 CH₃ 3-Benzofuran-CH₂ 20 CH₃ 2-pyrrole-CH₂ 21 CH₃ 3-pyrazole-CH₂

EXAMPLE 6 2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]

Step 1 Intermediate V

To a stirred solution of Boc-(R)-Trp-OH (6.08 g, 0.02 mol) in DMF (50 mL) was added HBTU (7.59, 0.02 mol) and DIPEA (3.57 mL, 0.02 mol). After 5 min DIPEA (3.57 mL, 0.02 mol) and (S)−(−)-α-methylbenzylamine in DMF (10 mL) was added. After a further 60 min, the solvent was removed under reduced pressure. The residue was taken up in EtOAc (250 mL) and washed with brine (50 mL), 1N HCl (100 mL), saturated NaHCO₃ (3×100 mL), brine (50 mL), dried (MgSO₄), filtered and the solvent was removed under reduced pressure. The residue was dissolved in CH₂Cl₂ (20 mL) and formic acid (30 mL). The reaction was stirred over night at room temperature before refluxing for 4 h. The solvent was removed under reduced pressure and the product was crystallized from ether. Stirring in EtOAc (100 mL) for 4 h and filtration gave pure product (4.17 g, 68%). The filtrate was purified by chromatography using EtOAc and then EtOAc/MeOH/NH₃(aq) (95:5:0.5) as eluent. Crystallization from ether gave white crystalline solid (0.98 g , 16%); mp 142-144° C.; [α_(D) ¹⁹=−83.9° (c=1, MeOH); IR (film): 3338, 3295, 3059, 2975, 2928, 1649, 1518, 1494, 1455, 1342, 1104, 894, 740 cm⁻¹; NMR (CDCl₃): δ1.44 (3H, d, J=7.1 Hz); 1.51 (2H, s); 2.95 (1H, d.d, J=14.4 and 8.5 Hz); 3.36 (1H, d.d, J=14.4 and 4.4 Hz); 3.74 (1H, d.d, J=8.5 and 4.4 Hz); 5.05-5.15 (1H, m); 6.95 (1H, d, J=2.2 Hz); 7.10-7.38 (8H, m); 7.48-7.52 (1H, m); 7.66-7.69 (1H, m); 7.98 (1H, s); MS m/e (APCI⁺): 309.1 (20%), 308.1 (100%, M⁺+H); Analysis calculated for C₁₉H₂₁N₃O: C, 74.24; H, 6.89; N, 13.66%. Found: C, 74.07; H, 6.87; N, 13.70%.

Step 2

To a stirred solution of 2-benzofurancarboxaldehyde (0.73 g, 5 mmol) in 1,2-dichloroethane (20 mL) was added intermediate V (1.54 g, 5 mmol) followed by sodium triacetoxyborohydride (1.48 g, 7 mmol). After stirring for 3 h the reaction was cautiously quenched with saturated NaHCO₃ (20 mL) and extracted with CH₂Cl₂ (3×50 mL). The combined organic phases were dried (MgSO₄) and the solvent was removed under reduced pressure. The residue was purified by chromatography using 30% EtOAc in heptane as eluent to give pure product as a glass (2.0 g, 91%); [α_(D)]²⁰=+34.0 (c=0.5, MeOH); IR (film): 3316, 3059, 2973, 2925, 1653, 1517, 1455, 1341, 1254, 1104, 1010, 909, 741 cm⁻¹; NMR (CDCl₃): δ1.38 (3H, d, J=7.1 Hz); 1.93 (1H, s); 2.92 (1H, d.d, J=14.6 and 9.3 Hz); 3.29-3.35 (1H, m); 3.58 (1H, d.d, J=9.3 and 4.2 Hz); 3.75 (1H, d, J=14.9 Hz); 3.82 (1H, d, J=14.9 Hz); 5.07-5.15 (1H, m); 6.36 (1H, s); 6.87 (1H, d, J=2.2 Hz); 7.04-7.08 (1H, m); 7.15-7.35 (10H, m); 7.43-7.45 (1H, m); 7.58-7.64 (2H, m); 7.92 (1H, s); MS m/e (APCI⁺): 439.9 (5%), 438.9 (34%), 437.9 (100%, M⁺+H), 307.0 (9%); Analysis calculated for C₂₈H₂₇N₃O₂: C, 76.86; H, 6.22; N, 9.60%. Found: C, 77.11; H, 6.31; N, 9.67%.

EXAMPLE 7 2-(2-Benzofuran-2-yl-ethylamino)-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]

Step 1

A solution of N-methylmorpholine (NMM, 5.31 g, 52.5mmol) in THF (30 mL) was added dropwise over 15 min to a stirred solution of 2-benzofuranacetic acid (8.80 g, 50 mmol) and ethyl chloroformate (5.70 g, 52.5 mmol) in THF (150 mL, anhydrous) at 0° C. The reaction mixture was stirred for 1 h at room temperature before filtering off the precipitate of NMM.HCl. The filtrate was cooled to 0° C. and a solution of lithium borohydride (30 mL, 60 mmol, 2M in THF) was added dropwise over 30 min. The reaction was allowed to reach room temperature and stirred over night before being cautiously quenched with 1N HCl (100 mL)—vigorous effervescence. The THF was removed under reduced pressure and the aqueous phase was extracted with EtOAc (200 mL). The organic phase was washed with 1N HCl, H₂O, saturated NaHCO₃ (×2), brine, and dried (MgSO₄). Removal of solvent under reduced pressure gave intermediate VI (7.74 g, 93%). Used in the next step without further purification. IR (film): 3347, 2957, 2887, 1603, 1587, 1455, 1422, 1317, 1252, 1167, 1105, 1049, 945, 926, 881, 854, 807, 751 cm⁻¹; NMR (CDCl₃): δ1.64 (1H, t, J=6.0 Hz); 3.05 (2H, t, J=6.2 Hz); 4.00 (2H, q, J=6.1 Hz); 6.51 (1H, d, J=1.0 Hz); 7.17-7.25 (2H, m); 7.41-7.44 (1H, m); 7.49-7.52 (1H, m).

Step 2

To an ice-cold solution of alcohol VI (1.62 g, 10 mmol) and NEt₃ (1.01 g, 10 mmol) in ether (50 mL, anhydrous) was added a solution of methanesulphonyl chloride (1.20 g, 10.5 mmol) dropwise over 5 min. The ice bath was removed and the reaction was stirred at room temperature for 30 min before filtering off the NEt₃.HCl. The ether was removed under reduced pressure. To a portion of the mesylate (240 mg, 1 mmol) dissolved in toluene (50 mL, anhydrous) was added amine V. The reaction was refluxed for 48 h, a further equivalent of NEt₃ was added, and reflux was continued for a further 48 h. The reaction mixture was cooled and washed with 1N NaOH, the organic layer was dried (MgSO₄), and solvent removed under reduced pressure. The residue was purified by chromatography on normal phase silica using 20% EtOAc in heptane as eluent and then on reverse phase silica using 70% MeOH in H₂O as elan. Product crystallized on drying in vacuum oven to give pure product (82 mg, 18%); mp 105-107° C.; [α]D²²=−1.2° (c=0.25, MeOH); IR (film): 3305, 3058, 2924, 2851, 1651, 1515 1455, 1356, 1342, 1252, 1166, 1105, 742 cm⁻¹; NMR (CDCl₃): δ1.37 (3H, d, J=7.1 Hz); 1.57 (1H, s); 2.72-2.97 (5H, m); 3.28-3.34 (1H, m); 3.44-3.48 (1H, m); 5.07-5.15 (1H, m); 6.06 (1H, s); 6.75 (1H, d, J=2.2 Hz); 7.06-7.33 (11H, m); 7.40-7.44 (1H, m); 7.51 (1H, d, J=8.5 Hz); 7.62-7.65 (2H, m); MS m/e (ES⁺): 453.1 (33%), 452.2 (100%, M⁺+H); Analysis calculated for C₂₉H₂₉N₃O₂: C, 77.14; H, 6.47; N, 9.31%. Found: C, 77.06; H, 6.48; N, 9.30%.

EXAMPLE 8 2-[(4,5-Dimethyl-furan-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]

To a stirred solution of the 4,5-dimethyl-2-furaldehyde (124 mg, 1 mmol) in 1,2-dichloroethane (20 mL) was added intermediate V (307 mg, 1 mmol) followed by sodium triacetoxyborohydride (424 mg, 2 mmol). After stirring over night the reaction was cautiously quenched with saturated NaHCO₃ (20 mL) and extracted with CH₂Cl₂ (2×20 mL). The combined organic phases were dried (MgSO₄) and the solvent was removed under reduced pressure. The residue was purified by chromatography on normal phase silica using 25% EtOAc in heptane as eluent to give pure product as a glass (196 mg, 47%); [α]_(D) ²¹=+18.6° (c=0.5, MeOH); IR (film): 3312, 3059, 2971, 2922, 1651, 1516, 1455, 1342, 1220, 1106, 741 cm⁻¹; NMR (CDCl₃): δ1.44 (3H, d, J=6.8 Hz); 1.60-1.90 (1H, br.s); 1.83 and 2.06 (each 3H, s); 2.89 (1H, d.d, J=14.6 and 9.3 Hz); 3.26-3.32 (1H, m); 3.49 (1H, d, J=14.4 Hz); 3.50-3.54 (1H, m); 3.58(1H, d, J=14.4 Hz); 5.08-5.16 (1H, m); 5.76 (1H, s); 6.89 (1H, d, J=2.2 Hz); 7.01-7.11 (1H, m); 7.17-7.36 (7H, m); 7.62-7.65 (2H, m); 7.95 (1H, s); MS m/e (ES⁺): 417.3 (31%), 416.3 (100%, M⁺+H), 308.3 (34%); Analysis calculated for C₂₆H₂₉N₃O₂H₂O: C, 74.51; H, 7.07; N, 10.03%. Found: C, 74.43; H, 6.82; N, 10.03%.

EXAMPLE 9 2-[(1H-Benzoimidazol-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]

Step 1

A solution of 2-hydroxymethyl benzimidazole (1.19 g, 8 mmol) and bis(4-nitrophenyl) carbonate (2.43 g, 8 mmol) in DMF (20 mL, anhydrous) was stirred for 12 h at room temperature. The DMF was removed under reduced pressure and the residue stirred in ether (50 mL) for 2 h. Filtration and washing with ether (50 mL) gave crystalline intermediate VII (1.04 g, 74%); IR (film): 1819, 1623, 1592, 1568, 1486, 1445, 1411, 1369, 1359, 1147, 1106, 1076, 1009, 997, 941, 862, 847, 765, 750, 741 cm⁻¹; NMR (CDCl₃): δ5.49 (2H, s); 7.42-7.50 (2H, m); 7.79-7.84 (1H, m); 7.88-7.93 (1H, m).

Step 2

The product from step 1 (174 mg, 1 mmol) and intermediate V (307 mg, 1 mmol) were dissolved in DMF (10 mL, anhydrous) and stirred at 60° C. for 10 h. The solvent was removed under reduced pressure and the residue was purified by chromatography on reverse phase silica using 60% MeOH in H₂O as eluent. The solvent was removed under reduced pressure and the residue was crystallized from EtOAc to give pure product (396 mg, 91%); mp 148-152.5 ° C.; [α] _(D) ²¹=+24.2° (c=0.5, MeOH); IR (film): 3300, 3058, 2923, 1651, 1520, 1455, 1340, 1271, 1235, 1218, 1109, 1013, 909, 739 cm⁻¹; NMR (CDCl₃): δ1.31 (3H, d, J=7.1 Hz); 2.00-2.50 (1H, br.s); 3.04 (1H, d.d, J=14.4 and 8.8 Hz); 3.29 (1H, d.d, J=14.4 and 5.2 Hz); 3.50 (1H, d.d, J=8.8 and 5.2 Hz); 3.94 (1H, d, J=15.9 Hz); 4.04 (1H, d, J=15.9 Hz); 5.03-5.10 (1H, m); 6.85 (1H, d, J=7.8 Hz); 6.99 (1H, d, J=2.2 Hz); 7.10-7.30 (10H, m); 7.20-7.70 (1H, br.s); 7.42 (1H, d, J=8.1 Hz); 7.66 (1H, d, J=7.8 Hz); 8.06 (1H, s); 8.80-9.20 (1H, br.s); MS m/e (ES⁺): 439.3 (28%), 438.3 (100%, M⁺+H); Analysis calculated for C₂₇H₂₇N₅O: C, 74.12; H, 6.22; N, 16.01%. Found: C, 74.04; H, 6.19; N, 15.95%.

EXAMPLE 10 2-[(Benzo[b]thiophen-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide

Step 1

A solution of NMM (2.309 mL, 21 mmol) in THF (10 mL) was added dropwise to a stirred ice cooled solution of benzo[b]thiophene-2-carboxylic acid (3.56 g, 20 mmol) and ethyl chloroformate (2.008 mL, 21 mmol) in THF (150 mL) over 15 mins. The reaction mixture was stirred at room temperature for 1 h before adding N,O-dimethylhydroxylamine hydrochloride (2.146 g, 22 mmol) and NMM (2.419 mL, 22 mmol). The reaction was stirred at room temperature over night. The solvent was removed under reduced pressure. The residue was taken up in EtOAc (100 mL) and washed with 2N HCl (3×100 mL), 2N NaOH (100 mL), H₂O, brine, dried (MgSO₄), and the solvent was removed under reduced pressure. The residue was purified by chromatography on normal phase silica using 30% EtOAc in heptane as eluent. Crystallization from ether/heptane gave pure product (3.24 g, 73%).

To a stirred solution of the Weinreb amide (2.06 g, 9.3 mmol) in THF (100 mL, anhydrous) under nitrogen at 0° C. was added diisobutylaluminum hydride (11 mL, 11 mmol, 1M in CH₂Cl₂) dropwise. After 20 min the reaction mixture was poured onto ice cold 2N HCl and extracted with ether. The organic phase was washed with brine, dried (MgSO₄), and the solvent was removed under reduced pressure. The residue was purified by chromatography on normal phase silica using 5% EtOAc in heptane as eluent to give solid benzo[b]thiophene-2-carboxaldehyde (Intermediate VI) (665 mg, 44%). IR (film): 1669, 1592, 1516, 1431, 1255, 1224, 1135, 840, 747, 725 cm⁻¹; NMR (CDCl₃): δ7.42-7.54 (2H, m); 7.91 (1H, d, J=8.1 Hz); 7.95(1H, d, J=7.8 Hz); 8.04 (1H, s); 10.12 (1H, s).

Step 2

To a stirred solution of the benzo[b]thiophene-2-carboxaldehyde (Intermediate VI) (162 mg, 1 mmol) in 1,2-dichloroethane (20 mL) was added intermediate V (307 mg, 1 mmol) followed by sodium triacetoxyborohydride (424 mg, 2 mmol). After stirring over night the reaction was cautiously quenched with saturated NaHCO₃ (20 mL) and extracted with CH₂Cl₂ (2×20 mL). The combined organic phases were dried (MgSO₄) and the solvent was removed under reduced pressure. The residue was purified by chromatography on normal phase silica using 20% EtOAc in heptane as eluent. Crystallization from ether/heptane gave pure product (305 mg, 67%); mp 102-108° C.; [α]_(D) ²¹=+51.40° (c=0.5, MeOH); IR (film): 3311, 3059, 292 1651, 1515, 1456, 743 cm⁻¹; NMR (CDCl₃): δ1.40 (3H, d, J=7.1 Hz); 1.97 (1H, s); 2.99 (1H, d.d, J=14.7 and 8.8 Hz); 3.35 (1H, d.d, J=14.4 and 4.2 Hz); 3.59 (1H, d.d, J=8.5 and 4.4 Hz); 3.94 (2H, m); 5.07-5.16 (1H, m); 6.91-6.93 (2H, m); 7.06-7.11 (1H, m); 7.17-7.37 (9H, m); 7.50 (1H, d, J=8.5 Hz); 7.60 (1H, d.d, J=7.0 and 1.6 Hz); 7.65 (1H, d, J=8.1 Hz); 7.72-7.76 (1H, m); 7.95 (1H, s); MS m/e (ES⁺): 476.1 (60%, M⁺+Na), 454.1 (100%, M⁺+H), 402.2 (25%); (ES⁻): 453.2 (25%), 452.1 (100%, M⁻−H); Analysis calculated for C₂₈H₂₇N₃OS: C, 74.14; H, 6.00; N, 9.26; S, 7.07%. Found: C, 74.27; H, 6.16; N, 9.31; S, 7.11%.

EXAMPLE 11 3-(1H-Indol-3-yl)-N-(1-phenyl-ethyl)-2-[(quinolin-3-ylmethyl)-amino]-propionamide, [R-(R*,S*)]

Method as for Example 10, step 2. The residue was purified by chromatography on normal phase silica using 2% MeOH in CH₂Cl₂ as eluent. Crystallization from EtOAc/heptane gave pure product (340 mg, 76%); mp 161-163° C.; [α]_(D) ²²=+40° (c=0.5, MeOH); IR (film): 3280, 3055, 2972, 2926, 1655, 1515, 1497, 1456, 1342, 1127, 742 cm⁻¹; NMR (CDCl₃): δ1.40 (3H, d, J=7.1 Hz); 1.90 (1H, s); 2.96 (1H, d.d, J=14.7 and 9.0 Hz); 3); 36 (1H, d.d, J=14.5 and 4.5 Hz); 3.53-3.56 (1H, m); 3.78 (1H, d, J=13.7 Hz); 3.92 (1H, d, J=13.7 Hz); 5.08-5.16 (1H, m); 6.90 (1H, d, J=2.2 Hz); 7.03-7.08 (1H, m); 7.15-7.20 (1H, m); 7.23-7.37 (6H, m); 7.43 (1H, d J=8.3 Hz); 7.49-7.51 (1H, m); 7.59-7.72 (4H, m); 8.02 (1H, s); 8.04 (1H, d, J=8.3 Hz); 8.66 (1H, d, J=2.2 Hz); MS m/e (ES⁺): 471.1 (31%, M⁺+Na), 449.1(100%, M⁺+H); Analysis calculated for C₂₉H₂₈N₄O: C, 77.65; H, 6.29; N, 12.49%. Found: C, 78.02; H, 6.30; N, 12.48%.

EXAMPLE 12 2-[(5-Chloro-thiophen-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide, [R(R*,S*)]

Method as for Example 10, step 2. The residue was dissolved in aqueous acetonitrile and acidified using formic acid before being purified by chromatography on reverse phase silica using 40% CH₃CN in H₂O (0.1% formic acid in mobile phases) as eluent. The solvent was removed under reduced pressure and the residue was suspended between EtOAc and saturated NaHCO₃. The EtOAc was dried (MgSO₄) and the solvent was removed under reduced pressure to give pure product as a glass (245 mg, 56%); [α]_(D) ²²=+26.2° (c=0.5, MeO); IR (film): 3307, 3059, 2973, 2925, 1652, 1515, 1455, 1342, 1230, 1105, 1061, 1000, 796, 742 cm⁻¹; NMR (CDCl₃): δ1.43 (3H, d, J=6.8 Hz); 1.85 (1H, s); 2.96 (1H, d.d, J=14.7 and 8.5 Hz); 3.31 (1H, d.d, J=14.5 and 4.5 Hz); 3.49-3.53 (1H, m); 3.71-3.79 (2H, m); 5.07-5.15 (1H, m); 6.50 (1H, d, J=3.7 Hz); 6.65 (1H, d, J=3.9 Hz); 6.91 (1H, d, J=2.4 Hz); 7.09-7.14 (1H, m); 7.18-7.39 (8H, m); 7.63 (1H, d, J=7.6 Hz); 7.98 (1H, s); MS m/e (ES⁺): 437.9 (100%, M⁺+H); Analysis calculated for C₂₄H₂₄N₃OSCl: C, 65.81; H, 5.52; N, 9.59; Cl, 8.09; S, 7.32%. Found: C, 65.54; H, 5.45; N, 9.40; Cl, 7.85; S, 7.42%.

EXAMPLE 13 3-(1H-Indol-3-yl)-N-(1-phenyl-ethyl)-2-(3-trifluoromethylsulfanyl-benzylamino)-propionamide, [R-(R*,S*)]

To a stirred solution of 3-(trifluoromethylthio)benzaldehyde (72 mg, 0.55 mmol) in 1,2-dichloroethane (20 mL) was added intermediate V (154 mg, 0.5 mmol) followed by sodium triacetoxyborohydride (148 mg, 0.7 mmol). After stirring over night the reaction was cautiously quenched with saturated NaHCO₃ (20 mL) and extracted with CH₂Cl₂ (3×50 mL). The combined organic phases were dried (MgSO₄) and the solvent was removed under reduced pressure. The residue was purified by chromatography on normal phase silica using 30% EtOAc in heptane as eluent. The solvent was removed under reduced pressure to give pure product as a glass (193 mg, 77%); IR (film): 3306, 3058, 2972, 2923, 1651, 1516, 1456, 1342, 1114, 743 cm⁻¹; NMR (CDCl₃): δ1.41 (3H, d, J=6.8 Hz); 1.60-1.90 (1H, br.s); 2.96 (1H, d.d, J=14.5 and 8.9 Hz); 3.32 (1H, d.d, J=14.4 and 4.4 Hz); 3.48 (1H, d.d, J=8.9 and 4.5 Hz); 3.62 (1H, d, J=13.9 Hz); 3.76 (1H, d, J=13.7 Hz); 5.08-5.16 (1H, m); 6.91 (1H, d, J=2.2 Hz); 7.07-7.48 (13H, m); 7.60 (1H, d, J=7.8 Hz); 7.97 (1H, s); MS m/e (ES⁺): 499.4 (32%), 498.4 (100%, M⁺+H); Analysis calculated for C₂₇H₂₆N₃OSF₃. 0.25H₂O: C, 64.59; H, 5.32; N, 8.37; S, 6.39%. Found: C, 64.69; H, 5.34; N, 8.30; S, 6.27%.

EXAMPLE 14 2-(3-Cyano-benzylamino)-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]

Method as for Example 13. Chromatography on normal phase silica using 45% EtOAc in heptane as the eluent and subsequent removal of the solvent under reduced pressure gave pure product as a glass (130 mg, 62%); IR (film): 3312, 3059, 2973, 2924, 2229, 1652, 1516, 1456, 1342, 1231, 1101, 743 cm⁻¹; NMR (CDCl₃): δ1.42 (3H, d, J=6.8 Hz); 1.87 (1H, s); 2.91 (1H, d.d, J=14.5 and 9.2 Hz); 3.32 (1H, d.d, J=14.5 and 4.0 Hz); 3.41 (1H, d.d, J=9.0 and 4.4 Hz); 3.58 (1H, d, J=14.2 Hz); 3.76 (1H, d, J=14.2 Hz); 5.08-5.17 (1H, m); 6.94 (1H, d, J=2.2 Hz); 7.07-7.12 (1H, m); 7.19-7.45 (12H, m); 7.58 (1H, d, J=8.1 Hz); 8.05 (1H, s); MS m/e (ES⁺) 424.4 (30%), 423.4 (100%, M⁺+H); (ES⁻): 422.3 (30%, M⁻), 421.3 (100%, M⁻−H); Analysis calculated for C₂₇H₂₆N₄O: C, 76.75; H, 6.20; N, 13.26%. Found: C, 76.58; H, 6.14; N, 13.24%.

EXAMPLE 15 3-(1H-Indol-3-yl)-2-(3-nitro-benzylamino)-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]

To a stirred solution of 3-nitrobenzaldehyde (332 g, 2.2 mmol) in 1,2-dichloroethane (60 mL) was added intermediate V (614 mg, 2 mmol) followed by sodium triacetoxyborohydride (594 mg, 2.8 mmol). After stirring over night the reaction was cautiously quenched with saturated NaHCO₃ (20 mL) and extracted with CH₂Cl₂ (3×50 mL). The combined organic phases were dried (MgSO₄) and the solvent was removed under reduced pressure. The residue was purified by chromatography on normal phase silica using 45% EtOAc in heptane as eluent. The solvent was removed under reduced pressure to give pure product as a glass (648 mg, 73%); IR (film): 3317, 2925, 1652, 1526, 1456, 1349, 733 cm^(−1;)NMR (CDCl₃): δ1.43 (3H, d, J=6.8 Hz); 1.85-1.95 (1H, br.s); 2.90 (1H, d.d, J=14.5 and 9.1 Hz); 3.33 (1H, d.d, J=14.4 and 4.4 Hz); 3.43 (1H, d.d, J=9.0 and 4.5 Hz); 3.65 (1H, d, J=14.2 Hz); 3.83 (1H, d, J=14.2 Hz); 5.09-5.17 (1H, m); 6.94 (1H, d, J=2.4 Hz); 7.06 (1H, t, J=7.5 Hz); 7.18 (1H, t, J=7.5 Hz); 7.22-7.40 (10H, m); 7.87 (1H, m); 7.97-8.10 (2H, m); MS m/e (ES⁺): 444.4 (30%), 443.4 (100%, M⁺+H); Analysis calculated for C₂₆H₂₆N₄O₃: C, 70.57; H, 5.92; N, 12.66%. Found: C, 70.55; H, 5.88; N, 12.67%.

EXAMPLE 16 3-(1H-Indol-3-yl)-N-(1-phenyl-ethyl)-2-(3-trifluoromethoxy-benzylamino)-propionamide, [R-(R*,S*)]

Method as for Example 13. Chromatography on normal phase silica using 35% EtOAc in heptane as the eluent and subsequent removal of the solvent under reduced pressure gave pure product as a glass (130 mg, 54%); IR (film): 3307, 3060, 2974, 2925, 1652, 1589, 1516, 1495, 1456, 1260, 1217, 1164, 1012, 743 cm⁻¹; NMR (CDCl₃): δ1.40 (3H, d, J=6.8 Hz); 1.60-2.00 (1H, br.s); 2.97 (1H, d.d, J=14.7 and 8.8 Hz); 3.29-3.35 (1H, m); 3.48 (1H, d.d, J=8.8 and 4.6 Hz); 3.62 (1H, d, J=13.9 Hz); 3.74 (1H, d, J=13.9 Hz); 5.07-5.15 (1H, m); 6.91 (1H, d, J=2.2 Hz); 6.96-7.39 (13H, m); 7.63 (1H, d, J=7.8 Hz); 7.97 (1H, m); MS m/e (ES⁺): 483.4 (30%), 482.4 (100%, M⁺+H); Analysis calculated for C₂₇H₂₆N₃O₂F₃: C, 67.35; H, 5.44; N, 8.73%. Found: C, 67.31; H, 5.43; N, 8.67%.

EXAMPLE 17 2-(3-Hydroxy-benzylamino)-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]

Method as for Example 13. Chromatography on normal phase silica using 40% EtOAc in heptane as the eluent and subsequent removal of the solvent under reduced pressure gave pure product as a glass (94 mg, 45%); IR (film): 3317, 3059, 2975, 2926, 1645, 1589, 1520, 1456, 1266, 1159, 743 cm⁻¹; NMR (CDCl₃): δ1.40 (3H, d, J=7.1 Hz); 1.70-1.90 (1H, br.s); 2.89 (1H, d.d, J=14.5 and 9.4 Hz); 3.33 (1H, d.d, J=14.7 and 4.2 Hz); 3.49-3.54 (1H, m); 3.53 (1H, d, J=13.9 Hz); 3.69 (1H, d, J=13.9 Hz); 5.00-5.20 (2H, m); 6.28 (1H, d, J=1.7 Hz); 6.60 (1H, d, J=7.6 Hz); 6.65 (1H, d.d, J=7.9 and 2.0 Hz); 6.89 (1H, d, J=2.2 Hz); 7.06 (1H, t, J=7.8 Hz); 7.09-7.13 (1H, m); 7.19-7.52 (7H, m); 7.54 (1H, d, J=8.5 Hz); 7.64 (1H, d, J=8.5 Hz); 8.05 (1H, m); MS m/e (ES⁺): 415.4 (30%), 414.4 (100%, M⁺+H); Analysis calculated for C₂₆H₂₇N₃O₂: C,75.52; H, 6.58; N, 10.16%. Found: C, 75.28; H, 6.61; N, 10.03%.

EXAMPLE 18 2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]

To a stirred solution of 2-benzofurancarboxaldehyde (3.19 g, 21.8 mmol) in 1,2-dichloroethane (150 mL) was added 2-amino-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide (prepared as described by Boyle S. et al., Bioorg. Med. Chem. 2:357, 1994) (5 g, 15.6 mmol), followed by sodium triacetoxyborohydride (6.6 mg, 31.2 mmol). After stirring over night the reaction was cautiously quenched with 2N NaOH (150 mL) and extracted with CH₂Cl₂ (3×200 mL). The combined organic phases were dried (MgSO₄) and the solvent was removed under reduced pressure. The residue was purified by chromatography on normal phase silica using 30% EtOAc in heptane as eluent and then on reverse phase silica using 70% MeOH in H₂O as eluent. Crystallization from ether gave pure product (5.55 g, 79%); mp 118-121° C.: [α_(D) ²⁰=+12.5° (c=1, MeOH); IR (film): 3329, 3059, 2975, 2926, 1652, 1506, 1455, 1371, 1354, 1342, 1255, 1170, 1105, 1010, 938, 743 cm⁻¹; NMR (CDCl₃): δ1.47 (3H, s); 1.47 (3H, d, J=6.8 Hz); 1.89 (1H, s); 3.16 (2H, s); 3.78 (1H, br.d, J=12.9 Hz); 3.86 (1H, d, J=14.4 Hz); 5.05-5.13 (1H, m); 6.43 (1H, s); 6.87 (1H, d, J=2.2 Hz); 7.09-7.40 (11H, m); 7.47-7.50 (1H, m); 7.65 (1H, d, J=7.8 Hz); 7.92 (1H, d, J=7.8 Hz); 7.96 (1H, s); MS m/e (ES⁺): 453.1 (30%), 452.1 (100%, M⁺+H), 393.2 (15%); Analysis calculated for C₂₉H₂₉N₃O: C, 77.14; H, 6.47; N, 9.30%. Found: C, 77.14; H, 6.42; N, 9.36%.

EXAMPLE 19 2-[(Benzofuran-3-ylmethyl)-amino]-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]

To a stirred solution of 3-benzofurancarboxaldehyde (146 mg, 1 mmol) (Ind. J. Chem., Vol. 31B, 1992, 526) in 1,2-dichloroethane (10 mL) was added 2-amino-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide (321 mg, 1 mmol) followed by sodium triacetoxyborohydride (424 mg, 2 mmol). After stirring over night at room temperature another portion of sodium triacetoxyborohydride (424 mg, 2 mmol) was added. The reaction was heated to reflux for 4 h. Cooled to room temperature and cautiously quenched with saturated NaHCO₃ (100 mL) and extracted with CH₂Cl₂ (3×20 mL). The combined organic phases were dried (MgSO₄) and the solvent was removed under reduced pressure. The residue was purified by chromatography on normal phase silica using 25% EtOAc in heptane as eluent. Crystallization from ether/heptane gave pure product (232 mg, 51%); mp 104-106° C.: [α]_(D) ²³=13.4° (c=1, MeOH); IR (film): 3418, 3314, 3058, 2976, 2927, 1652, 1505, 1452, 1371, 1354, 1341, 1279, 1266, 1186, 1095, 1010, 858, 743 cm⁻¹; NMR (CDCl₃): δ1.40 (3H, d, J=6.8 Hz); 1.52 (3H, s); 1.71 (1H, s); 3.15 (1H, d, J=14.4 Hz); 3.27 (1H, d, J=14.4 Hz); 3.80 (1H, d, J=3.2 Hz); 3.88 (1H, d, J=13.2 Hz); 5.01-5.09 (1H, m); 6.79 (1H, d, J=2.2 Hz); 7.07-7.40 (12H, m); 7.44 (1H d.d, J=8.3 and 0.7 Hz); 7.65 (1H, d, J=7.8 Hz); 7.68 (1H, d, J=8.1 Hz); 7.93 (1H, s); MS m/e (ES⁺): 452.1 (100%, M⁺+H); Analysis calculated for C₂₉H₂₉N₃O₂: C, 77.14; H, 6.47; N, 9.30%. Found: C, 76.91; H, 6.39; N, 9.26%.

EXAMPLE 20 3-(1H-Indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-2-[(1H-pyrrol-2-ylmethyl)-amino]-propionamide, (R-(R*,S*)]

To a stirred solution of 2-pyrrolecarboxaldehyde (71 mg, 0.75 mmol) in 1,2-dichloroethane (10 mL) was added 2-amino-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide (161 mg, 0.5 mmol) followed by sodium triacetoxyborohydride (424 mg, 2 mmol). After stirring over night at room temperature the reaction was cautiously quenched with saturated NaHCO₃ (50 mL) and extracted with CH₂Cl₂ (2×50 mL). The combined organic phases were dried (MgSO₄) and the solvent was removed under reduced pressure. The residue was purified by chromatography on normal phase silica using 40% EtOAc in heptane as eluent. Crystallization from ether/heptane gave pure product (50 mg, 25%); mp 123-133° C.; [α]_(D) ²³=(c=1, MeOH); IR (film): 3314, 2976, 2926, 2852, 1651, 1511, 1455, 909, 736 cm⁻¹; NMR (CDCl₃): δ1.41 (3H, d, J=6.8 Hz); 1.45 (3H, s); 3.14 (1H, d, J=14.4 Hz); 3.29 (1H, d, J=14.4 Hz); 3.70 (1H, d, J=13.1 Hz); 3.76 (1H, d, J=12.9 Hz); 5.02-5.10 (1H, m); 5.97 (1H, s); 6.07-6.09 (1H, m); 6.58-6.60 (1H, m); 6.74 (1H, d, J=2.2 Hz); 7.10-7.35 (8H, m); 7.41 (1H d, J=7.6 Hz); 7.65 (1H, d, J=7.8 Hz); 7.89 (2H, s); MS m/e (ES⁺): 423.2 (20%, M⁺+Na); 402.2 (30%); 401.2 (100%, M⁺+H); 322.2 (40%); Analysis calculated for C₂₅H₂₈N₄O: C, 74.97; H, 7.05; N, 13.99%. Found: C, 74.83; H, 7.05; N, 13.95%.

EXAMPLE 21 3-(1H-Indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-2-[(2H-pyrazol-3-ylmethyl)-amino]-propionamide, [R-(R*,S*)]

To a stirred solution of pyrazole-3-carboxaldehyde (96 mg, 1 mmol, supplied as dimer) in pyridine (10 mL) was added 2-amino-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide (161 mg, 0.5 mmol) followed by sodium triacetoxyborohydride (848 mg, 4 mmol). After stirring over night at room temperature another portion of sodium triacetoxyborohydride (424 mg, 2 mmol) was added. After stirring over night at room temperature the pyridine was removed under reduced pressure. The residue was taken up in CH₂Cl₂ (100 mL) and saturated NaHCO₃. The aqueous phase was extracted with CH₂Cl₂ (100 mL). The combined organic phases were washed with brine (50 mL), dried (MgSO₄), and the solvent was removed under reduced pressure. The residue was initially purified by chromatography on normal phase silica using 95% EtOAc in heptane as eluent. The solvent was removed under reduced pressure and the residue was dissolved in aqueous acetonitrile and acidified using formic acid. Purification by chromatography on reverse phase silica using 25% CH₃CN in H₂O (0.1% formic acid in mobile phases) as eluent gave pure product. The solvent was removed under reduced pressure and the residue was suspended between EtOAc and saturated NaHCO₃. The EtOAc was dried (MgSO₄) and the solvent was removed under reduced pressure to give pure product as a glass (20 mg, 10%); IR (film): 3260, 3059, 2979, 2927, 1651, 1515, 1456, 1374, 1266, 1105, 1048, 1011, 932, 741 cm⁻¹; NMR (DMSO-d₆): δ1.22 (3H, s); 1.35 (3H, d, J=6.8 Hz); 2.26 (1H, s); 2.96-3.05 (2H, m); 3.50-3.75 (2H, m); 4.93 (1H, s); 6.10 (1H, s); 6.89-6.93 (2H, m); 7.00-7,04 (1H, m); 7.18-7.32 (6H, m); 7.35 (0.5H, s); 7.52 (1H, d, J=7.8 Hz); 7.60 (0.5H, s); 8.05-8.20 (1H, m); 10.82 (1H, s); 12.52 (0.5H, s); 12.73 (0.5H, s); MS m/e (ES⁺): 424.1 (27%); 402.1 (100%, M⁺+H).

EXAMPLE 22 2-(3-Benzofuran-2-ylmethyl-ureido)-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]

Step 1

To a stirred solution of potassium hydroxide (6.6 g, 100 mmol, 85%) and hydroxylamine (3.66, 52.5 mmol) in EtOH (100 mL, 95%) and water (100 mL) was added 2-benzofurancarboxaldehyde (7.34 g, 50 mmol). Stirred for 48 h before removing the EtOH under reduced pressure. The aqueous phase was saturated with NaCl and then extracted with EtOAc (2×300 mL). The combined organic phases were dried (MgSO₄) and the solvent removed under reduced pressure. Crystallization from ether gave pure oxime (7.2 g, 89%). To an ice-cold solution of the oxime (3.22 g, 20 mmol) in THF (150 mL, anhydrous) was added dropwise a solution of lithium aluminum hydride (20 mL, 20 mmol, 1M in THF) under an atmosphere of nitrogen. Reaction mixture allowed to reach room temperature and stirred over night. Reaction mixture cautiously quenched using water. Added 5N NaOH, and aqueous phase extracted with EtOAc (2×100 mL). The combined organic layers were washed with brine, dried (MgSO₄), and the solvent was removed under reduced pressure. The residue was purified by chromatography on normal phase silica using EtOAc as eluent to give intermediate IX (1.75 g, 59%).

Step 2

A solution of the armine prepared in step 1 (1.358 g, 9.23 mmol) and pyridine (1.46, 18.5 mmol) in CH₂Cl₂ (20 mL, anhydrous) was added dropwise over 20 min to an ice cooled solution of triphosgene (0.96, 3.23 mmol). Reaction mixture allowed to reach room temperature. After 30 min, solvent removed under reduced pressure. The residue was taken up in EtOAc, filtered, and solvent removed under reduced pressure to give isocyanate (1.60 g, 100%). IR (film): 2256 cm⁻. A solution of the isocyanate (1.038 g, 6 mmol) and 2-amino-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide (1.926 g, 6 mmol) in THF (50 mL, anhydrous) was stirred at room temperature for 5 min. The solvent was removed under reduced pressure. The residue was taken up in EtOAc and washed with 1N HCl (3×20 mL), saturated Na₂CO₃ (30 mL), brine (30 mL), dried MgSO₄, and the solvent removed under reduced pressure. The residue was purified by chromatography on reverse phase silica using 65% MeOH in H₂O as eluent. Crystallization from MeOH/H₂O gave pure product (1.35 g, 45%). mp 176-178 ° C.; [α] _(D) ²²=+30.4° (c=1, MeOH); IR (film): 3321, 3058, 2978, 2932, 1645, 1558, 1506, 1495, 1445, 1253, 741 cm⁻¹; NMR (CDCl₃): δ1.35 (3H, d, J=6.8 Hz); 1.61 (3H, s); 3.20 (1H, d, J=14.6 Hz); 3.54 (1H, d, J=14.6 Hz); 4.38 (1H, d.d, J=16.0 and 6.0 Hz); 4.45 (1H, d.d, J=15.9 and 6.1 Hz); 4.78 (1H, t, J=6.0 Hz); 4.97 (1H, s); 4.95-5.05 (1H, m); 6.49 (1H, s); 6.76 (1H, d, J=2.4 Hz); 7.00 (1H, d, J=7.6 Hz); 7.05-7.10 (1H, m); 7.13-7.28 (9H, m); 7.38 (1H, d, J=8.1 Hz); 7.48-7.50 (1H, m); 7.57 (1H, d, J=7.8 Hz); 7.74 (1H, s); MS m/e (APCI⁺): 496.3 (30%); 495.2 (100%, M⁺+H); 477.2 (7%); 374.2 (7%); 322.3 (17%); Analysis calculated for C₃₀H₃₀N₄O₃: C, 72.85; H, 6.11; N, 11.32%. Found: C, 73.09; H, 6.08; N, 11.35%.

EXAMPLES 23 TO 191 (See Table 2 Below)

Intermediate VII, N-[b]benzofuranylmethyl-R-α-methyl-tryptophan-N-carboxyanhydride

Intermediate I (5.23 g, 15 mmol) was stirred in toluene (50 mL) under nitrogen and heated to 55° C. Phosgene in toluene (37 mL, 75 mmol) was added in one portion and as soon as the temperature had returned to 55° C. dry THF (150 mL) was added rapidly dropwise. Stirring was continued for 30 min and the reaction was then cooled, the solvent removed in vacuo. The residue taken up in ether (50 mL) and filtered and evaporated to dryness several times until a solid was obtained; (6.15 g, 100%); IR (film): 3418, 1844, 1771, 1455, 1397, 1251, 986, 746 cm⁻¹; NMR (CDCl₃) 1.64 (3H, s); 3.31 (1H, d, J=15 Hz); 3.44 (1H, d, J=15 Hz); 4.45 (1H, d J=16Hz); 4.81 (1H, d, J=16 Hz); 6.77 (1 H, s); 6.94 (1H, d J=2.8 Hz); 7.14-7.58 (8H, m); 8.16(1H, s).

General procedure for array synthesis of Examples 23 to 191

A 40-well DTI synthesizer rack (U.S. Pat. No. 5,324,483) was loaded with 40 DTI vials (12 mL). To each vial 0.15-0.21 mmol of an amine or amine HCl salt was added. The rack was placed in a Cyberlab Liquid Handling Robot and to each vial 0.10 mmol N-[b]benzofuranylmethyl-R-α-methyl-tryptophan-N-carboxyanhydride (0.227 M in THF) was added. To those vials that contained amine HCl salts, 0.15 mmol triethylamine (0.254 M in THF) was added, in order to liberate the free amines. THF was then added to each vial to make up the total volume to 3 mL. The vials were placed in a 40-well DTI synthesizer equipped with a heating block, 40 condensers and a nitrogen manifold. The synthesizer was kept under a continuous flow of nitrogen and was shaken at 65° C. on an orbital shaker for 2 days. The reactions were monitored by TLC (10% CH₃CN in CH₂Cl₂). The vials in which the reaction had gone to completion were taken out. To the remaining vials CH₃CN (2 mL) was added each and these were shaken at 85° C. for 19 h. The vials in which the reaction had gone to completion were taken out. To the remaining vials pyridine (1 mL) was added each and these were shaken at 105° C. for 6 h followed by 15 h at 65° C. The vials were then concentrated at reduced pressure in a Speedvac and were purified by chromatography over a 12 mL LC-Si SPE cartridge containing 2 g silica (elution with 10% CH₃CN in CH₂Cl₂ followed by 20% CH₃CN in CH₂Cl₂, 5% methanol in CH₂Cl₂, 10% methanol in CH₂Cl₂, 20% methanol in CH₂Cl₂ and 50% methanol in CH₂Cl₂, depending on the polarity of the products). The products were subjected to LC-MS. Those products which did contain the desired molecular ion, but were not sufficiently pure (typically <85%) were further purified by prep HPLC on a C18 reversed phase preparative column. The HPLC-purified products were re-analyzed by LC-MS to determine the purity. The 40 final products were analyzed by ¹H NMR.

EXAMPLES 192 TO 308 (See Table 3 Below)

Intermediate II

Step 1

The compound was prepared as described for Intermediate I, step 1; (20.5 g, 59%); NMR (CDCl₃) 2.10 (1H, s); 3.18 (2H, m); 3.60 (3H, s); 3.80-4.00 (2H, m); 6.43 (1H, s); 7.03-7.60 (9H, m); 8.00 (1H, s).

Step 2

The compound was prepared as described for Intermediate I; (7.02 g, 85%); NMR (DMSO-D₆) 3.01-3.12 (2H, m); 3.52 (1H, m); 3.80 (1H, d, J=15 Hz); 3.80 (1H, d, J=14.8 Hz); 6.61 (1H, s); 6.93-7.54 (9H, m); 10.82 (1H, s).

General procedure for array synthesis of Examples 192 to 308 (see Table 4 below)

A 40-well DTI synthesizer rack was loaded with 40 Kimble vials (10 mL). To each vial approximately 0.34 g (0.10 mmol) N-[b]benzofuranylmethyl-R-tryptophan was added followed by 1.5 equivalent of an amine or amine HCl salt. The rack was placed in a Cyberlab Liquid Handling Robot and to each vial 1.0 equivalent of HBTU (0.4 M in DMF) was added followed by 1.5 equivalent of diisopropylethylamine (0.5 M in DMF). To those vials, which contained amine HCl salts, an additional equivalent of diisopropylethylamine was added. DMF was added to make the total volume up to 1.5 mL. The vials were capped and the rack was shaken on an orbital shaker at room temperature for 3 h. To each vial, water (1 mL) was added and the mixtures were purified on 3 mL LC-18 reversed phase SPE cartridges containing 500 mg of sorbent, using an ASPEC XL4 robot. The cartridges were conditioned with methanol (4 mL) followed by methanol/water 1:1 (4 mL). Water (1 mL) was loaded onto the cartridges and the crude reaction mixtures were loaded into the water layer. The cartridges were washed with water (4 mL) and methanol/water 1:1 (4 mL) and were eluted with methanol (4 mL). The methanol fractions were concentrated and the products were subjected to LC-MS. Those products which did contain the desired molecular ion, but were not sufficiently pure (typically <90%) were further purified by prep HPLC on a C18 reversed phase preparative column. The HPLC-purified products were re-analyzed by LC-MS to determine the purity. The 40 final products were analyzed by ¹H NMR.

EXAMPLES 309 TO 405 See Table 5 Below

General procedure for array synthesis of Examples 309 to 405

The N-terminal derivatives where prepared from 2-amino-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide, prepared as described by Boyle S., et al., Bioorg. Med. Chem. 2:357 (1994), or from 2-amino-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide (Inter-mediate V), using the procedure of Siegel M. G., et al., Tet. Lett. 38: 3357, (1997).

Because the compounds are potent ligands to the NK, receptor, they are effective at displacing substance P at that position, and therefore are useful for treating biological conditions otherwise mediated by substance P. Accordingly, compounds capable of antagonising the effects of substance P at NK₁ receptors will be useful in treating or preventing a variety of brain disorders including pain (inflammatory, surgical and neuropathic), anxiety, panic, depression, schizophrenia, neuralgia, stress, sexual dysfunction, bipolar disorders, movement disorders, cognitive disorders, and addiction disorders; inflammatory diseases such as arthritis, asthma, and psoriasis; gastrointestinal disorders including colitis, Crohn's disease, irritable bowel syndrome and satiety; allergic responses such as eczema and rhinitis; vascular disorders such as angina and migraine; neuropathological disorders including scleroderma and emesis. The compounds of the invention, NK₁ receptor antagonists, are also useful as anti-angiogenic agents, for the treatment of conditions associated with aberrant neovascularization such as rheumatoid arthritis, atherosclerosis and tumour cell growth. They will also be useful as agents for imaging NK₁ receptors in vivo in conditions such as ulcerative colitis and Crohn's disease.

The compounds of the present invention are highly selective and competitive antagonists of the NK₁ receptor. They have been evaluated in an NK₁-receptor binding assay which is described below.

Human lymphoma IM9 cells were grown in RPMI 1640 culture medium supplemented with 10% fetal calf serum and 2 mM glutamine and maintained under an atmosphere of 5% CO₂. Cells were passaged every 3-4 days by reseeding to a concentration of 4-8×10⁶/40 ml per 175 cm² flask. Cells were harvested for experiments by centrifugation at 1000 g for 3 min. Pelleted cells were washed once by resuspension into assay buffer (50 mM Tris HCl pH 7.4, 3 mM MnCl₂, 0.02% BSA, 40 mg/mL bacitracin, 2 mg/mL chymostatin, 2 mM phosphoramidon, 4 mg/mL leupeptin) and repeating the centrifugation step before resuspending at a concentration of 2.5×10⁶ cells/mL assay buffer. Cells (200 ml) were incubated with [¹²⁵I]Bolton-Hunter substance P (0.05-0.1 nM) in the presence and absence of varying concentrations of test compounds for 50 min at 21° C. Non-specific binding (10% of the total binding observed under these conditions) was defined by 1 mM [Sar⁹, Met(0₂)¹¹] substance P. Reactions were terminated by rapid filtration under vacuum onto GF\C filters presoaked in 0.2% PEI for 1-2 h, using a Brandel cell harvester. Filters were washed with 6×1 ml ice-cold Tris HCl (50 mM, pH 7.4) and radioactivity bound determined using a gamma couter. Results were analyzed using iterative curve fitting procedures in RS1 or Graphpad Inplot.

TABLE 1 In Vitro Human NK₁ Receptor Binding Assay NK₁ binding Example No IC₅₀ (nM) 1 591 2 23 3 6 4 1213 5 295 6 0.7 7 3.3 8 27 9 112 10 51 11 46 12 14 13 35 14 4.7 15 >10,000 16 9.1 17 344 18 4.4 19 58 20 815 21 1808 22 2.9

Similar binding data are presented in Tables 2-5 for specific invention compounds.

TABLE 2 Examples 23-191 Yield Mol. Icms % Icms Rt IC₅₀ (nM) Ex. Name (mg) ion purity (min) hNK₁ 23 2-[(Benzofuran-2-ylmethyl)-amino]-3 19,7 439 100 3,07 1284 (1H-indol-3-yl)-2-methyl-N-pyridin-2 ylmethyl-propionamide 24 2-[(Benzofuran-2-ylmethyl)-amino]- 23,5 439 100 2,6 547 3-(1H-indol-3-yl)-2-methyl-N- pyridin-3-ylmethyl-propionamide 25 2-[(Benzofuran-2-ylmethyl)-amino]- 41,9 439 100 2,6 131 3-(1H-indol-3-yl)-2-methyl-N- pyridin-4-ylmethyl-propionamide 26 2-[(Benzofuran-2-ylmethyl)-amino]- 18,4 430 100 5,2 1011 N-cyclohexyl-3-(1H-indol-3-yl)-2- methyl-propionamide 27 2-[(Benzofuran-2-ylmethyl)-amino]- 24,6 444 100 5,81 311 N-cyclohexylmethyl-3-(1H-indol-3- yl)-2-methyl-propionamide 28 2-[(Benzofuran-2-ylmethyl)-amino]- 26,5 438 97 4,6 44 N-benzyl-3-(1H-indol-3-yl)-2- methyl-propionamide 29 2-[(Benzofuran-2-ylmethyl)-amino]- 43,1 468 82 3,22 7 N-(2-hydroxy-1-phenyl-ethyl)-3- (1H-indol-3-yl)-2-methyl- propionamide 30 2-[(Benzofuran-2-ylmethyl)-amino]- 43,3 486 74 5,81 17 N-[1-(4-chloro-phenyl)-ethyl]-3- (1H-indol-3-yl)-2-methyl- propionamide 31 2-[(Benzofuran-2-ylmethyl)amino]- 29,4 502 100 6,05 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(1- naphthalen-1-yl-ethyl)-propionamide 32 2-[(Benzofuran-2-ylmethyl)-amino]- 40,1 502 100 5,96 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(1- naphthalen-1-yl-ethyl)-propionamide 33 2-[(Benzofuran-2-ylmethyl)-amino]- 44,4 470 100 5,11 9 N-[1-(4-fluoro-phenyl)-ethyl]-3-(1H- indol-3-yl)-2-methyl-propionamide 34 2-[(Benzofuran-2-ylmethyl)-amino]- 23,8 497 100 5,07 14 3-(1H-indol-3-yl)-2-methyl-N-[1-(4- nitro-phenyl)-ethyl]-propionamide 35 2-[(Benzofuran-2-ylmethyl)-amino]- 27,8 482 100 4,86 31 3-(1H-indol-3-yl)-N-[1-(4-methoxy- phenyl)-ethyl]-2-methyl- propionamide 36 N-[1-(2-Amino-phenyl)-ethyl]-2- 25,8 467 100 4,45 1620 [(benzofuran-2-ylmethyl)-amino]-3- (1H-indol-3-yl)-2-methyl- propionamide 37 N-[1-(3-Amino-phenyl)-ethyl]-2- 25,5 467 100 3,7 364 [(benzofuran-2-ylmethyl)-amino]-3- (1H-indol-3-yl)-2-methyl- propionamide 38 N-[1-(4-Amino-phenyl)-ethyl]-2- 22,5 467 100 3,2 141 [(benzofuran-2-ylmethyl)-amino]-3- (1H-indol-3-yl)-2-methyl- propionamide 39 2-[(Benzofuran-2-ylmethyl)-amino]- 48,3 495 100 5,26 863 N-[1-(4-dimethylamino-phenyl)- ethyl]-3-(1H-indol-3-yl)-2-methyl- propionamide 40 2-[(Benzofuran-2-ylmethyl)-amino)- 25,3 495 100 5,18 1065 N-[1-(3-dimethylamino-phenyl)- ethyl]-3-(1H-indol-3-yl)-2-methyl- propionamide 41 2-[(Benzofuran-2-ylmethyl)-amino]- 17 458 100 4,89 19 3-(1H-indol-3-yl)-2-methyl-N-(1- thiophen-3-yl-ethyl)-propionamide 42 2-[(Benzofuran-2-ylmethyl)-amino]- 34,5 452 100 5,06 261 3-(1H-indol-3-yl)-2-methyl-N-(1- phenyl-ethyl)-propionamide 43 2-{[2-[(Benzofuran-2-ylmethyl)- 28,5 500 10 9,4 3613 amino]-3-(1H-indol-3-yl)-2-methyl- propionylamino]-methyl}-4- hydroxy-pyrimidine-5-carboxylic acid 44 2-[(Benzofuran-2-ylmethyl)-amino]- 43,9 453 90 6,85 151 3-(1H-indol-3-yl)-2-methyl-N-(1- pyridin-3-yl-ethyl)-propionamide 45 2-[(Benzofuran-2-ylmethyl)-amino]- 43 453 95 7,15 913 3-(1H-indol-3-yl)-2-methyl-N-(2- pyridin-2-yl-ethyl)-propionamide 46 2-[(Benzofuran-2-ylmethyl)-amino]- 49,5 506 95 10,2 1560 N-(2,4-dichloro-benzyl)-3-(1H- indol-3-yl)-2-methyl-propionamide 47 2-[(Benzofuran-2-ylmethyl)-amino]- 52,6 531 95 6,66 7616 3-(1H-indol-3-yl)-2-methyl-N-[2-(4- sulfamoyl-phenyl)-ethyl]- propionamide 48 N-(2-Amino-6-fluoro-benzyl)-2- 49,3 471 95 8,68 6423 [(benzofuran-2-ylmethyl)-amino]-3- (1H-indol-3-yl)-2-methyl- propionamide 49 2-[(Benzofuran-2-ylmethyl)-amino]- 4,9 460 95 8,22 1550 N (2-hydroxy-cyclohexylmethyl)-3- (1H-indol-3-yl)-2-methyl- propionamide 50 2-[(Benzofuran-2-ylmethyl)-amino]- 44,4 468 95 7,6 1333 N-(2-hydroxy-2-phenyl-ethyl)-3- (1H-indol-3-yl)-2-methyl- propionamide 51 2-[(Benzofuran-2-ylmethyl)-amino]- 31,1 574 95 10,32 179 N-(3,5-bis-trifluoromethyl-benzyl)- 3-(1H-indol-3-yl)-2-methyl- propionamide 52 2-[(Benzofuran-2-ylmethyl)-amino]- 39,3 459 95 9,16 >10,000 3-(1H-indol-3-yl)-2-methyl-N-[2-(1- methyl-pyrrolidin-2-yl)-ethyl]- propionamide 53 2-[(Benzofuran-2-ylmethyl)-amino]- 42 452 90 8,9 262 3-(1H-indol-3-yl)-2-methyl-N- phenethyl-propionamide 54 2-[(Benzofuran-2-ylmethyl)-amino]- 23,2 466 90 9,95 834 N-(2,3-dimethyl-benzyl)-3-(1H- indol-3-yl)-2-methyl-propionamide 55 2-[(Benzofuran-2-ylmethyl)-amino]- 49 468 95 8,95 643 3-(1H-indol-3-yl)-N-(3-methoxy- benzyl)-2-methyl-propionamide 56 N-[2-(4-Amino-phenyl)-ethyl]-2- 49 467 90 7,31 3228 [(benzofuran-2-ylmethyl)-amino]-3- (1H-indol-3-yl)-2-methyl- propionamide 57 2-[(Benzofuran-2-ylmethyl)-amino]- 7 458 95 10,73 290 N-(1-cyclohexyl-ethyl)-3-(1H-indol- 3-yl)-2-methyl-propionamide 58 2-[(Benzofuran-2-ylmethyl)-amino]- 27 466 90 9,95 624 3-(1H-indol-3-yl)-2-methyl-N-(1-p- tolyl-ethyl)-propionamide 59 2-[(Benzofuran-2-ylmethyl)-amino]- 46 522 90 9,61 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(3- trifluoromethoxy-benzyl)- propionamide 60 2-[(Benzofuran-2-ylmethyl)-amino]- 10 481 90 9,16 964 N-(4-dimethylamino-benzyl)-3-(1H- indol-3-yl)-2-methyl-propionamide 61 2-[(Benzofuran-2-ylmethyl)-amino]- 48,4 456 90 8,74 61 N-(4-fluoro-benzyl)-3-(1H-indol-3- yl)-2-methyl-propionamide 62 N-(4-Amino-benzyl)-2- 32,3 453 90 7,29 837 [(benzofuran-2-ylmethyl)-amino]-3- (1H-indol-3-yl)-2-methyl- propionamide 63 2-[(Benzofuran-2-ylmethyl)-amino]- 21,6 466 75 9,95 58 3-(1H-indol-3-yl)-2-methyl-N-(1- phenyl-propyl)-propionamide 64 2-[(Benzofuran-2-ylmethyl)-amino]- 50,2 472 90 9,3 76 N-(4-chloro-benzyl)-3-(1H-indol-3- yl)-2-methyl-propionamide 65 2-[(Benzofuran-2-ylmethyl)-amino]- 43,9 516 90 9,43 700 N-(2-bromo-benzyl)-3-(1H-indol-3- yl)-2-methyl-propionamide 66 2-[(Benzofuran-2-ylmethyl)-amino]- 40,9 522 90 9,69 3444 3-(1H-indol-3-yl)-2-methyl-N-(4- trifluoromethoxy-benzyl)- propionamide 67 2-[(Benzofuran-2-ylmethyl)-amino]- 18,8 466 92 9,94 3 3-(1H-indol-3-yl)-2-methyl-N-(1-p- tolyl-ethyl)-propionamide 68 2-[(Benzofuran-2-ylmethyl)-amino]- 48,9 468 90 8,41 312 3-(1H-indol-3-yl)-N-(4-methoxy- benzyl)-2-methyl-propionamide 69 2-[(Benzofuran-2-ylmethyl)-amino]- 44,7 453 95 7,68 12 3-(1H-indol-3-yl)-2-methyl-N-(1- pyridin-2-yl-ethyl)-propionamide 70 2-[(Benzofuran-2-ylmethyl)-amino]- 38,1 458 90 10,45 216 N-(2-cyclohexyl-ethyl)-3-(1H-indol- 3-yl)-2-methyl-propionamide 71 2-[(Benzofuran-2-ylmethyl)-amino]- 40 452 90 9,13 144 3-(1H-indol-3-yl)-2-methyl-N-(4- methyl-benzyl)-propionamide 72 2-[(Benzofuran-2-ylmethyl)-amino]- 43,2 516 90 9,43 18 N-(3-bromo-benzyl)-3-(1H-indol-3- yl)-2-methyl-propionamide 73 2-[(Benzofuran-2-ylmethyl)-amino]- 35,2 468 90 7,56 1229 N-(2-hydroxy-2-phenyl-ethyl)-3- (1H-indol-3-yl)-2-methyl- propionamide 74 2-[(Benzofuran-2-ylmethyl)-amino]- 16 506 90 9,51 12 3-(1H-indol-3-yl)-2-methyl-N-(3- trifluoromethyl-benzyl)- propionamide 75 2-[(Benzofuran-2-ylmethyl)-amino]- 48,1 528 100 7,06 >10,000 N-(1,2-diphenyl-ethyl)-3-(1H-indol- 3-yl)-2-methyl-propionamide 76 2-[(Benzofuran-2-ylmethyl)-amino]- 28 405 50 2,01 3696 3-(1H-indol-3-yl)-2-methyl-N-(2- methylamino-ethyl)-propionamide 77 2-[(Benzofuran-2-ylmethyl)-amino]- 20 472 100 6,19 17 N-(3-chloro-benzyl)-3-(1H-indol-3- yl)-2-methyl-propionamide 78 2-[(Benzofuran-2-ylmethyl)-amino]- 9,2 485 50 1,93 >10,000 3-(1H-indol-3-yl)-2-methyl-N- (1,3,5-triaza-tricyclo[3.3.1.1>3,7]- dec-7-yl)-propionamide 79 2-[(Benzofuran-2-ylmethyl)-amino]- 30,1 534 100 6,84 >10,000 3-(1H-indol-3-yl)-2-methyl-N-[1- methyl-2-(3-trifluoromethyl-phenyl)- ethyl]-propionamide 80 2-[(Benzofuran-2-ylmethyl)-amino]- 22,4 529 100 5,9 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(2- phenyl-2-pyridin-2-yl-ethyl)- propionamide 81 4-{[2-[(Benzofuran-2-ylmethyl)- 37,4 526 100 5,59 >10,000 amino]-3-(1H-indol-3-yl)-2-methyl- propionylamino]-methyl}-3- methoxy-benzoic acid methyl ester 82 2-[(Benzofuran-2-ylmethyl)-amino]- 8,5 432 100 6,51 1144 3(1H-indol-3-yl)-2-methyl-N- (1,2,2-trimethyl-propyl)- propionamide 83 2-[(Benzofuran-2-ylmethyl)-amino]- 27,5 419 100 3,61 3519 N-(2-dimethylamino-ethyl)-3-(1H- indol-3-yl)-2-methyl-propionamide 84 4-[2-[(Benzofuran-2-ylmethyl)- 5 544 100 1,62 >10,000 amino]-3-(1H-indol-3-yl)-2-methyl- propionylamino]-3-(4-chloro- phenyl)-butyric acid 85 2-[(Benzofuran-2-ylmethyl)-amino]- 11,3 479 100 3,73 2443 3-(1H-indol-3-y])-2-methyl-N-(3- oxo-2,3-dihydro-1H-isoindol-1-yl)- propionamide 86 2-[(Benzofuran-2-ylmethyl)-amino]- 24,7 460 100 2,58 >10,000 3-(1H-indol-3-yl)-2-methyl-N-[2-(2- oxo-imidazolidin-1-yl)-ethyl]- propionamide 87 2-[(Benzofuran-2-ylmethyl)-amino]- 38,9 551 100 4,63 >10,000 3-(1H-indol-3-yl)-2-methyl-N-[3-(4- pyridin-2-yl-piperazin-1-yl)-propyl]- propionamide 88 2-[(Benzofuran-2-ylmethyl)-amino]- 33,4 515 100 4,58 >10,000 N-[4-(2,6-dimethyl-piperidin-1-yl)- butyl]-3-(1H-indol-3-yl)-2-methyl- propionamide 89 2-[(Benzofuran-2-ylmethyl)-amino]- 21,2 527 100 8,88 6735 3-(1H-indol-3-yl)-2-methyl-N-(1- piperidin-1-ylmethyl-cyclohexyl)- propionamide 90 2-[(Benzofuran-2-ylmethyl)-amino]- 8,2 456 100 3,07 >10,000 N-[2-(1H-imidazol-4-yl)-1-methyl- ethyl]-3-(1H-indol-3-yl)-2-methyl- propionamide 91 2-[(Benzofuran-2-ylmethyl)-amino]- 28,1 473 100 3,07 >10,000 3-(lH-indol-3-yl)-2-methyl-N-[3-(2- oxo-pyrrolidin-]-yl)-propyl]- propionamide 92 2-[(Benzofuran-2-ylmethyl)-amino]- 17,6 390 100 4,96 2285 3-(1H-indol-3-yl)-N-isopropyl-2- methyl-propionamide 93 2-[(Benzofuran-2-ylmethyl)-amino]- 17,6 473 100 3,29 >10,000 3-(1H-indol-3-yl)-2-methyl-N-[1- methyl-2-(2-oxo-pyrrolidin-1-yl)- ethyl]-propionamide 94 2-[(Benzofuran-2-ylmethyl)-amino]- 30,6 501 100 3,27 >10,000 N-[4-(2,5-dimethyl-pyrrolidin-1-yl)- butyl]-3-(1H-indol-3-yl)-2-methyl- propionamide 95 N-[2-(5-Amino-1H-imidazol-4-yl)- 19,2 471 100 3,5 >10,000 2-oxo-ethyl]-2-[(benzofuran-2- ylmethyl)-amino]-3-(1H-indol-3-yl)- 2-methyl-propionamide 96 2-[(Benzofuran-2-ylmethyl)-amino]- 4,6 461 100 2,26 >10,000 3-(1H-indol-3-yl)-2-methyl-N-[2-(2- oxo-oxazolidin-3-yl)-ethyl]- propionamide 97 2-[(Benzofuran-2-ylmethyl)-amino]- 30 442 100 2,26 >10,000 N-[2-(1H-imidazol-4-yl)-ethyl]-3- (1H-indol-3-yl)-2-methyl- propionamide 98 2-[(Benzofuran-2-ylmethyl)-amino]- 34,5 528 100 2,26 >10,000 N-(2,2-diphenyl-ethyl)-3-(1H-indol- 3-yl)-2-methyl-propionamide 99 2-[(Benzofuran-2-ylmethyl)-amino]- 17,9 459 100 2,26 >10,000 3-(1H-indol-3-yl)-2-methyl-N-[2-(2- oxo-pyrrolidin-1-yl)-ethyl]- propionamide 100 2-[(Benzofuran-2-ylmethyl)-amino]- 7,2 473 100 2,26 390 3-(1H-indol-3-yl)-2-methyl-N-(5- nitro-furan-2-ylmethyl)- propionamide 101 2-[(Benzofuran-2-ylmethyl)-amino]- 19,4 456 100 2,27 >10,000 3-(1H-indol-3-yl)-2-methyl-N-[2-(5- methyl-1H-imidazol-4-yl)-ethyl]- propionamide 102 2-[(Benzofuran-2-ylmethyl)-amino]- 18,9 549 90 8,66 >10,000 N-[1-(3-dimethylamino-phenyl)- cyclopentylmethyl]-3-(1H-indol-3- yl)-2-methyl-propionamide 103 2-[(Benzofuran-2-ylmethyl)-amino]- 0,4 478 77 0 05 74 N-(1H-benzoimidazol-2-ylmethyl)- 3-(1H-indol-3-yl)-2-methyl- propionamide 104 2-[(Benzofuran-2-ylmethyl)-amino]- 8,3 458 100 0 06 8 N-(1-cyclohexyl-ethyl)-3-(1H-indol- 3-yl)-2-methyl-propionamide 105 2-[(Benzofuran-2-ylmethyl)-amino]- 13,2 510 69 0 05 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(2- phenyl-[1,3-dioxolan-2-ylmethyl)- propionamide 106 2-[(Benzofuran-2-ylmethyl)-amino]- 5,7 507 100 0 06 4630 3-(1H-indol-3-yl)-2-methyl-N-(2- methyl-1,2,3,4-tetrahydro- isoquinolin-3-ylmethyl)- propionamide 107 2-[(Benzofuran-2-ylmethyl)-amino]- 14 464 100 0 05 4145 3-(1H-indol-3-yl)-2-methyl-N-(2- phenyl-cyclopropyl)-propionamide 108 2-[(Benzofuran-2-ylmethyl)-amino]- 0,6 493 100 0 05 4566 3-(1H-indol-3-yl)-2-methyl-N- (1,2,3,4-tetrahydro-isoquinolin-3- ylmethyl)-propionamide 109 2-[(Benzofuran-2-ylmethyl)-amino]- 30,3 512 100 0 06 279 N-(2,5-dichloro-thiophen-3- ymethyl)-3-(1H-indol-3-yl)-2- methyl-propionamide 110 2-[(Benzofuran-2-ylmethyl)-amino]- 19,7 478 100 0 05 1141 3-(1H-indol-3-yl)-2-methyl-N-(1- phenyl-cyclopropylmethyl)- propionamide 111 2-[(Benzofuran-2-ylmethyl)-amino]- 1 478 100 0 08 >10,000 3-(1H-indol-3-yl)-2-methyl-N- (1,2,3,4-tetrahydro-naphthalen-2-yl)- propionamide 112 2-[(Benzofuran-2-ylmethyl)-amino]- 3 483 100 0 06 12 3-(1H-indol-3-yl)-2-methyl-N-(3- nitro-benzyl)-propionamide 113 2-[(Benzofuran-2-ylmethyl)-amino]- 10,1 464 100 0 05 463 N-indan-2-yl-3-(1H-indol-3-yl)-2- methyl-propionamide 114 2-[(Benzofuran-2-ylmethyl)-amino]- 2,5 472 90 0 05 128 3-(1H-indol-3-yl)-2-methyl-N-(1- thiophen-2-yl-propyl)-propionamide 115 2-[(Benzofuran-2-ylmethyl)-amino]- 11,5 442 95 0 05 154 N-(2-furan-2-yl-ethyl)-3-(1H-indol- 3-yl)-2-methyl-propionamide 116 2-[(Benzofuran-2-ylmethyl)-amino]- 5,6 460 100 0 05 >10,000 N-(1-hydroxy-cyclohexylmethyl)-3- (1H-indol-3-yl)-2-methyl- propionamide 117 2-[(Benzofuran-2-ylmethyl)-amino]- 14,2 482 100 0 06 >10,000 N-(1-furan-2-yl-cyclobutylmethyl)- 3-(1H-indol-3-yl)-2-methyl- propionamide 118 2-[(Benzofuran-2-ylmethyl)-amino]- 15 492 100 0 06 45 N-[1-(5-chloro-thiophen-2-yl)- ethyl]-3-(1H-indol-3-yl)-2-methyl- propionamide 119 2-[(Benzofuran-2-ylmethyl)-amino]- 4,1 483 100 0 07 89 3-(1H-indol-3-yl)-2-methyl-N-(4- nitro-benzyl)-propionamide 120 2-[(Benzofuran-2-ylmethyl)-amino]- 0,7 506 94 0 06 2652 N-[2-(1H-indazol-3-yl)-1-methyl- ethyl]-3-(1H-indol-3-yl)-2-methyl- propionamide 121 2-[(Benzofuran-2-ylmethyl)-amino]- 15 441 100 0 05 654 3-(1H-indol-3-yl)-2-methyl-N-(2- pyrrol-1-yl-ethyl)-propionamide 122 2-[(Benzofuran-2-ylmethyl)-amino]- 8,7 526 100 0 08 442 N-[1-(2,5-dichloro-thiophen-3-yl)- ethyl]-3-(1H-indol-3-yl)-2-methyl- propionamide 123 2-[(Benzofuran-2-ylmethyl)-amino]- 7,3 499 63 0 04 >10,000 3-(1H-indol-3-yl)-2-methyl-N-[2- (octahydro-indol-1-yl)-ethyl]- propionamide 124 2-[(Benzofuran-2-ylmethyl)-amino]- 2,6 497 100 0 07 92 3-(1H-indol-3-yl)-2-methyl-N-[1-(4- nitro-phenyl)-ethyl]-propionamide 125 2-[(Benzofuran-2-ylmethyl)-amino]- 29,5 459 97 0 04 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(2- piperidin-1-yl-ethyl)-propionamide 126 2-[(Benzofuran-2-ylmethyl)-amino]- 28 448 95 0 07 6794 3-(1H-indol-3-yl)-2-methyl-N-(2- methyl-[1,3]dioxolan-2-ylmethyl)- propionamide 127 2-[(Benzofuran-2-ylmethyl)-amino]- 23,9 427 100 0 05 191 N-furan-2-ylmethyl-3-(1H-indol-3- yl)-2-methyl-propionamide 128 2-[(Benzofuran-2-ylmethyl)-amino]- 31,7 461 95 0 03 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(2- morpholin-4-yl-ethyl)-propionamide 129 2-[(Benzofuran-2-ylmethyl)-amino]- 37,7 452 100 0 06 43 3-(1H-indol-3-yl)-2-methyl-N-(3- methyl-benzyl)-propionamide 130 2-[(Benzofuran-2-ylmethyl)-amino]- 37,8 464 100 0 05 163 N-indan-1-yl-3-(1H-indol-3-yl)-2- methyl-propionamide 131 2-[(Benzofuran-2-ylmethyl)-amino]- 31,6 487 100 0 08 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(2- methyl-2-piperidin-1-yl-propyl)- propionamide 132 2-[(Benzofuran-2-ylmethyl)-amino]- 24,6 476 97 0 02 6035 3-(1H-indol-3-yl)-2-methyl-N-[2-(2- thioxo-imidazolidin-1-yl)-ethyl]- propionamide 133 2-[(Benzofuran-2-ylmethyl)-amino]- 5 480 87 0 06 4479 3-(1H-indol-3-yl)-2-methyl-N-(2- methyl-2-phenyl-propyl)- propionamide 134 2-[(Benzofuran-2-ylmethyl)-amino]- 27,3 456 100 0 02 5368 N-(3-imidazol-1-yl-propyl)-3-(1H- indol-3-yl)-2-methyl-propionamide 135 2-[(Benzofuran-2-ylmethyl)-amino]- 13,5 432 100 0 03 1205 3-(1H-indol-3-yl)-2-methyl-N- (tetrahydro-furan-2-ylmethyl)- propionamide 136 2-[(Benzofuran-2-ylmethyl)-amino]- 26,6 446 95 0 02 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(2- methyl-tetrahydro-furan-2- ylmethyl)-propionamide 137 2-[(Benzofuran-2-ylmethyl)-amino]- 33,6 444 96 0 03 100 3-(1H-indol-3-yl)-2-methyl-N- thiophen-2-ylmethyl-propionamide 138 2-[(Benzofuran-2-ylmethyl)-amino]- 25,4 432 96 0 02 4867 3-(1H-indol-3-yl)-2-methyl-N- (tetrahydro-furan-2-ylmethyl)- propionamide 139 2-[(Benzofuran-2-ylmethyl)-amino]- 41,7 474 93 0 05 99 N-(2,5-difluoro-benzyl)-3-(1H-indol- 3-yl)-2-methyl-propionamide 140 2-[(Benzofuran-2-ylmethyl)-amino]- 31,8 466 100 0 05 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(2- phenyl-propyl)-propionamide 141 N-(4-Amino-naphthalen-1- 11,6 503 95 0 03 2337 ylmethyl)-2-[(benzofuran-2- ylmethyl)-amino]-3-(1H-indol-3-yl)- 2-methyl-propionamide 142 2-[(Benzofuran-2-ylmethyl)-amino]- 19,3 498 96 0 03 1961 N-(2,3-dimethoxy-benzyl)-3-(1H- indol-3-yl)-2-methyl-propionamide 143 2-[(Benzofuran-2-ylmethyl)-amino]- 32,9 468 96 0 02 >10,000 N-[2-(4-hydroxy-phenyl)-ethyl]-3- (1H-indol-3-yl)-2-methyl- propionamide 144 2-[(Benzofuran-2-ylmethyl)-amino]- 16,4 446 94 0 02 >10,000 N-(1-hydroxymethyl-cyclopentyl)-3- (1H-indol-3-yl)-2-methyl- propionamide 145 2-[(Benzofuran-2-ylmethyl)-amino]- 35,9 453 97 0 01 1301 3-(1H-indol-3-yl)-2-methyl-N-(2- pyridin-3-yl-ethyl)-propionamide 146 2-[(Benzofuran-2-ylmethyl)-amino]- 0,8 444 90 0 02 3587 N-[1-(4,5-dihydro-furan-2-yl)-ethyl]- 3-(1H-indol-3-yl)-2-methyl- propionamide 147 2-[(Benzofuran-2-ylmethyl)-amino]- 18,5 460 98 0 02 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(2- piperazin-1-yl-ethyl)-propionamide 148 2-[(Benzofuran-2-ylmethyl)-amino]- 34,7 478 93 0 03 >10,000 3-(1H-indol-3-yl)-2-methyl-N- (1,2,3,4-tetrahydro-naphthalen-1-yl)- propionamide 149 2-[(Benzofuran-2-ylmethyl)-amino]- 31,8 490 75 0 02 >10,000 N-(2,5-dimethoxy-2,5-dihydro- furan-2-ylmethyl)-3-(1H-indol-3-yl)- 2-methyl-propionamide 150 2-[(Benzofuran-2-ylmethyl)-amino]- 32,4 466 95 0 04 262 3-(1H-indol-3-yl)-2-methyl-N-(2- phenyl-propyl)-propionamide 151 2-[(Benzofuran-2-ylmethyl)-amino]- 2,4 489 100 0 02 1213 3-(1H-indol-3-yl)-2-methyl-N- quinolin-3-ylmethyl-propionamide 152 4-[2-[(Benzofuran-2-ylmethyl)- 9 510 94 0 01 >10,000 amino]-3-(1H-indol-3-yl)-2-methyl- propionylamino]-3-phenyl-butyric acid 153 2-[(Benzofuran-2-ylmethyl)-amino]- 6,9 514 100 0 01 3555 N-[2-hydroxy-2-(4-hydroxy-3- methoxy-phenyl)-ethyl]-3-(1H- indol-3-yl)-2-methyl-propionamide 154 2-[(Benzofuran-2-ylmethyl)-amino]- 6,1 431 5 0 04 >10,000 3-(1H-indol-3-yl)-2-methyl-N- pyrrolidin-3-ylmethyl-propionamide 155 2-[(Benzofuran-2-ylmethyl)-amino]- 25,2 445 93 0 02 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(2- pyrrolidin-1-yl-ethyl)-propionamide 156 2-[(Benzofuran-2-ylmethyl)-amino]- 1,4 445 3 0 05 >10,000 3-(1H-indol-3-yl)-2-methyl-N- piperidin-4-ylmethyl-propionamide 157 2-[(Benzofuran-2-ylmethyl)-amino]- 38,2 452 95 0 02 455 3-(1H-indol-3-yl)-2-methyl-N-(2- methyl-benzyl)-propionamide 158 2-[(Benzofuran-2-ylmethyl)-amino]- 21,4 464 96 0 02 2567 N-indan-1-yl-3-(1H-indol-3-yl)-2- methyl-propionamide 159 2-[(Benzofuran-2-ylmethyl)-amino]- 7 492 92 0 01 3757 3-(1H-indol-3-yl)-2-methyl-N-(1- pyridin-3-yl-cyclobutylmethyl)- propionamide 160 2-[(Benzofuran-2-ylmethyl)-amino]- 6,1 511 100 0 03 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(1- thiophen-2-yl-cyclohexyl)- propionamide 161 2-[(Benzofuran-2-ylmethyl)-amino]- 12,3 484 100 0 01 >10,000 N-[2-(3,4-dihydroxy-phenyl)-ethyl]- 3-(1H-indol-3-yl)-2-methyl- propionamide 162 2-[(Benzofuran-2-ylmethyl)-amino]- 8,7 466 95 0 02 42 3-(1H-indol-3-yl)-2-methyl-N-(1- phenyl-propyl)-propionamide 163 2-[(Benzofuran-2-ylmethyl)-amino]- 16,9 466 80 0 07 166 3-(1H-indol-3-yl)-2-methyl-N-(2- oxo-2-phenyl-ethyl)-propionamide 164 2-[(Benzofuran-2-ylmethyl)-amino]- 5,5 542 10 0 06 >10,000 N-(5-hydroxy-4-oxo-4H-pyran-2- ylmethyl)-3-(1H-indol-3-yl)-2- methyl-propionamide 165 2-[(Benzofuran-2-ylmethyl)-amino]- 38,1 456 100 0 08 >10,000 N-bicyclo[2.2.1]hept-2-ylmethyl-3- (1H-indol-3-yl)-2-methyl- propionamide 166 2-[(Benzofuran-2-ylmethyl)-amino]- 41,9 456 95 0 07 37 N-(3-fluoro-benzyl)-3-(1H-indol-3- yl)-2-methyl-propionamide 167 2-[(Benzofuran-2-ylmethyl)-amino]- 23,2 474 100 0 07 29 N-(3,4-difluoro-benzyl)-3-(1H-indol- 3-yl)-2-methyl-propionamide 168 2-[(Benzofuran-2-ylmethyl-amino]- 42,8 490 95 0 08 230 N-(2-chloro-4-fluoro-benzyl)-3-(1H- indol-3-yl)-2-methyl-propionamide 169 2-[(Benzofuran-2-ylmethyl)-amino]- 11,2 467 100 0 06 6016 N-(4,6-dimethyl-pyridin-3- ylmethyl)-3-(1H-indol-3-yl)-2- methyl-propionamide 170 2-[(Benzofuran-2-ylmethyl)-amino]- 49,6 533 100 0 08 2384 N-(5-bromo-2-hydroxy-benzyl)-3- (1H-indol-3-yl)-2-methyl- propionamide 171 4-{[2-[(Benzofuran-2-ylmethyl)- 28,7 482 95 0 06 >10,000 amino]-3-(1H-indol-3-yl)-2-methyl- propionylamino]-methyl}-benzoic acid 172 2-[(Benzofuran-2-ylmethyl)-amino]- 36,8 458 100 0 07 153 3-(1H-indol-3-yl)-2-methyl-N-(2- thiophen-2-yl-ethyl)-propionamide 173 2-[(Benzofuran-2-ylmethyl)-amino]- 36,3 475 90 0 06 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(2- morpholin-4-yl-2-oxo-ethyl)- propionamide 174 N-Benzo[1,3]dioxol-5-ylmethyl-2- 45,7 482 100 0 07 94 [(benzofuran-2-ylmethyl)-amino]-3- (1H-indol-3-yl)-2-methyl- propionamide 175 2-[(Benzofuran-2-ylmethyl)-amino]- 21,4 507 90 0 08 96 N-(3,4-dichloro-benzyl)-3-(1H- indol-3-yl)-2-methyl-propionamide 176 2-[2-[(Benzofuran-2-ylmethyl)- 44,3 453 100 0 07 1763 amino]-3-(1H-indol-3-yl)-2-methyl- propionylamino]-3-(1H-imidazol-4- yl)-propionic acid methyl ester 177 2-[(Benzofuran-2-ylmethyl)-amino]- 24,6 490 100 0 08 444 N-(4-chloro-2-fluoro-benzyl)-3-(1H- indol-3-yl)-2-methyl-propionamide 178 N-(3-Amino-benzyl)-2- 36,2 453 100 0 06 1373 [(benzofuran-2-ylmethyl)-amino]-3- (1H-indol-3-yl)-2-methyl- propionamide 179 2-[(Benzofuran-2-ylmethyl)-amino]- 3,1 470 56 0 06 5917 N-(2,4-diamino-pyrimidin-5- ylmethyl)-3-(1H-indol-3-yl)-2- methyl-propionamide 180 2-[(Benzofuran-2-ylmethyl)-amino]- 42 456 95 0 07 266 N-(2-fluoro-benzyl)-3-(1H-indol-3- yl)-2-methyl-propionamide 181 2-[(Benzofuran-2-ylmethyl)-amino]- 23,4 474 100 0 07 269 N-(2,4-difluoro-benzyl)-3-(1H-indol- 3-yl)-2-methyl-propionamide 182 2-[(Benzofuran-2-ylmethyl)-amino]- 4,1 470 90 0 06 >10,000 N-(3,4-dihydroxy-benzyl)-3-(1H- indol-3-yl)-2-methyl-propionamide 183 2-[(Benzofuran-2-ylmethyl)-amino]- 1,7 472 33 0 05 >10,000 N-[1-hydroxymethyl-2-(1H- imidazol-4-yl)-ethyl]-3-(1H-indol-3- yl)-2-methyl-propionamide 184 2-[(Benzofuran-2-ylmethyl)-amino]- 36,4 460 100 0 07 >10,000 N-(2-hydroxy-cyclohexylmethyl)-3- (1H-indol-3-yl)-2-methyl- propionamide 185 2-[(Benzofuran-2-ylmethyl)-amino]- 28,5 475 100 0 06 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(3- morpholin-4-yl-propyl)- propionamide 186 2-[(Benzofuran-2-ylmethyl)-amino]- 8,5 454 81 0 07 84 N-(2-hydroxy-benzyl)-3-(1H-indol- 3-yl)-2-methyl-propionamide 187 2-[(Benzofuran-2-ylmethyl)-amino]- 42,2 486 100 0 07 131 N-(3-fluoro-4-methoxy-benzyl)-3- (1H-indol-3-yl)-2-methyl- propionamide 188 N-(2-Amino-4-methoxy-benzyl)-2- 10 483 96 0 06 2282 [(benzofuran-2-ylmethyl)-amino]-3- (1H-indol-3-yl)-2-methyl- propionamide 189 2-((Benzofuran-2-ylmethyl)-amino]- 47 472 94 0 07 1129 N-(2-chloro-benzyl)-3-(1H-indol-3- yl)-2-methyl-propionamide 190 2-[(Benzofuran-2-ylmethyl)-amino]- 41,6 474 97 0 07 3537 N-(2,6-difluoro-benzyl)-3-(1H-indol- 3-yl)-2-methyl-propionamide 191 2-[(Benzofuran-2-ylmethyl)-amino]- 24,4 490 99 0 07 55 N-(3-chloro-4-fluoro-benzyl)-3-(1H- indol-3-yl)-2-methyl-propionamide

TABLE 3 Examples 192-308 Yield Mol. Icms % Icms Rt IC₅₀ (nM) Ex. Name (mg) ion purity (min) hNK₁ 192 2-[(Benzofuran-2- 26 425 100 3, 94 1981 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- pyridin-2-ylmethyl- propionamide 193 2-[(Benzofuran-2- 27 446 94 1, 04 >10,000 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (2-piperazin-1-yl- ethyl)-propionamide 194 2-[(Benzofuran-2- 41 464 100 5.63, 703 ylmethyl)-amino]-3- 5.80 (1H-indol-3-yl)-N- (1,2,3,4-tetrahydro- naphthalen-1-yl)- propionamide 195 2-[(Benzofuran-2- 23 450 100 5, 39 1750 ylmethyl)-amino]- N-indan-1-yl-3-(1H- indol-3-yl)-propion- amide 196 2-[(Benzofuran-2- 36 458 100 5, 67 92 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (1-thiophen-2-yl- propyl)-propion- amide 197 2-[(Benzofuran-2- 44 488 99 6, 77 933 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (1-naphthalen-1-yl- ethyl)-propionamide 198 2-[(Benzofuran-2- 31 445 99 2, 27 >10,000 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- [2-(1-methyl- pyrrolidin-2-yl)- ethyl]-propionamide 199 2-[(Benzofuran-2- 39 454 100 5, 11 130 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (4-methoxy-benzyl)- propionamide 200 2-[(Benzofuran-2- 34 508 96 6, 19 355 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (3-trifluoromethoxy- benzyl)-propion- amide 201 2-[(Benzofuran-2- 21 442 100 1, 22 >10,000 ylmethyl)-amino]- N-(3-imidazol-1-yl- propyl)-3-(1H-indol- 3-yl)-propionamide 202 2-[(Benzofuran-2- 6 417 98 4, 3 2184 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- pyrrolidin-3-yl- methyl-propion- amide 203 2-[(Benzofuran-2- 22 431 96 1, 26 >10,000 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- piperidin-4-yl- methyl-propion- amide 204 2-[(Benzofuran-2- 18 460 100 5, 53 68 ylmethyl)-amino]- N-(2,5-difluoro- benzyl)-3-(1H- indol-3-yl)-propion- amide 205 2-[(Benzofuran-2- 10 475 97 4, 27 2315 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- quinolin-3-ylmethyl- propionamide 206 2-[(Benzofuran-2- 16 428 98 2, 31 6681 ylmethyl)-amino]- N-[2-(1H-imidazol- 4-yl)-ethyl]-3-(1H- indol-3-yl)-propion- amide 207 2-[(Benzofuran-2- 43 489 98 6, 76 591 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (1-naphthalen-1-yl- ethyl)-propionamide 208 2-[(Benzofuran-2- 31 458 100 5, 94 15 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- [1-(5-methyl- thiophen-2-yl)- ethyl]-propionamide 209 2-[(Benzofuran-2- 35 438 100 5, 74 82 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (4-methyl-benzyl)- propionamide 210 2-[(Benzofuran-2- 36 452 100 5, 98 337 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (1-p-tolyl-ethyl)- propionamide 211 2-[(Benzofuran-2- 21 432 100 5 >10,000 ylmethyl)-amino]- N-(1-hydroxy- methylcyclopentyl)- 3-(1H-indol-3-yl)- propionamide 212 2-[(Benzofuran-2- 18 427 96 5, 21 658 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (2-pyrrol-1-yl- ethyl)-propionamide 213 2-[(Benzofuran-2- 28 447 100 1, 39 1256 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (2-morpholin-4-yl- ethyl)-propionamide 214 2-[(Benzofuran-2- 39 467 99 4, 3 4015 ylmethyl)-amino]- N-(4-dimethyl- amino-benzyl)-3- (1H-indol-3-yl)- propionamide 215 2-[(Benzofuran-2- 9 498 97 6, 61 70 ylmethyl)-amino]- N-(2,5-dichloro- thiophen-3-yl- methyl)-3-(1H- indol-3-yl)-propion- amide 216 2-[(Benzofuran-2- 2 459 11 5, 07 >10,000 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (5-nitro-furan-2-yl- methyl)-propion- amide 217 2-[(Benzofuran-2- 44 481 99 4.46, 819 ylmethyl)-amino]- 4.78 N-[1-(4-dimethyl- amino-phenyl)- ethyl]-3-(1H-indol- 3-yl)-propionamide 218 2-[(Benzofuran-2- 20 560 85 7, 14 294 ylmethyl)-amino]- N-(3,5-bis-trifluoro- methyl-benzyl)-3- (1H-indol-3-yl)- propionamide 219 2-[(Benzofuran-2- 17 502 96 6, 96 31 ylmethyl)-amino]- N-(3-bromo- benzyl)-3-1H-indol- 3-yl)-propionamide 220 2-[(Benzofuran-2- 38 452 100 6, 16 2 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (1-p-tolyl-ethyl)- propionamide 221 2-[(Benzofuran-2- 37 469 100 5, 67 23 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (4-nitro-benzyl)- propionamide 222 2-[(Benzofuran-2- 30 431 100 1, 64 >10,000 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (2-pyrrolidin-1-yl- ethyl)-propionamide 223 2-[(Benzofuran-2- 36 418 100 4, 65 >10,000 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (tetrahydro-furan-2- ylmethyl)-propion- amide 224 2-[(Benzofuran-2- 9 450 100 6, 05 2902 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (2-phenyl-cyclo- propyl)-propion- amide 225 2-[(Benzofuran-2- 32 458 97 7, 07 1341 ylmethyl)-amino]- N-(1-cyclohexyl-1- methyl-ethyl)-3- (1H-indol-3-yl)- propionamide 226 2-[(Benzofuran-2- 33 430 100 6, 23 54 ylmethyl)-amino]- N-cyclohexyl- methyl-3-(1H-indol- 3-yl)-propionamide 227 2-[(Benzofuran-2- 41 481 96 5.05, 182 ylmethyl)-amino]- 5.36 N-[1-(3-dimethyl- amino-phenyl)- ethyl]-3-(1H-indol- 3-yl)-propionamide 228 2-[(Benzofuran-2- 31 492 100 6, 63 82 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (3-trifluoromethyl- benzyl)-propion- amide 229 2-[(Benzofuran-2- 39 476 98 6, 4 33 ylmethyl)-amino]- N-(3-chloro-4- fluoro-benzyl)-3- (1H-indol-3-yl)- propionamide 230 2-[(Benzofuran-2- 38 441 100 5, 54 21 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- [1-(1-methyl-1H- pyrrol-3-yl)-ethyl]- propionamide 231 2-[(Benzofuran-2- 35 425 100 0 04 790 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- pyridin-3-ylmethyl- propionamide 232 2-[(Benzofuran-2- 30 430 100 0 06 63 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- thiophen-2-yl- methyl-propion- amide 233 2-[(Benzofuran-2- 37 452 100 0 07 1998 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (2-phenyl-propyl)- propionamide 234 2-[(Benzofuran-2- 37 438 100 0 07 75 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (1-phenyl-ethyl)- propionamide 235 2-[(Benzofuran-2- 40 456 100 0 07 3 ylmethyl)-amino]- N-[1-(4-fluoro- phenyl)-ethyl]-3- (1H-indol-3-yl)- propionamide 236 2-[(Benzofuran-2- 41 444 100 0 07 7 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (1-thiophen-3-yl- ethyl)-propionamide 237 2-[(Benzofuran-2- 38 435 0 01 0 5341 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (2-oxo-2-phenyl- ethyl)-propionamide 238 2-[(Benzofuran-2- 34 442 100 0 07 89 ylmethyl)-amino]- N-(2-fluoro-benzyl)- 3-(1H-indol-3-yl)- propionamide 239 2-[(Benzofuran-2- 36 450 100 0 07 243 ylmethyl)-amino]- N-indan-2-yl-3-(1H- indol-3-yl)-propion- amide 240 2-[(Benzofuran-2- 33 425 100 0 04 196 ylmethyl)-amino]- N-indol-3-yl)-N- pyridin-4-ylmethyl- propionamide 241 2-[(Benzofuran-2- 29 444 100 0 07 2 ylmethyl)-amino]- N-(1-cyclohexyl- ethyl)-3-(1H-indol- 3-yl)-propionamide 242 2-[(Benzofuran-2- 39 438 100 0 07 170 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (2-methyl-benzyl)- propionamide 243 2-[(Benzofuran-2- 44 478 100 0 07 15 ylmethyl)-amino]- N-[1-(5-chloro- thiophen-2-yl)- ethyl]-3-(1H-indol- 3-yl)-propionamide 244 2-[(Benzofuran-2- 38 442 100 0 07 12 ylmethyl)-amino]- N-(4-fluoro-benzyl)- 3-(1H-indol-3-yl)- propionamide 245 2-[(Benzofuran-2- 32 483 100 0 07 3 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- [1-(4-nitro-phenyl)- ethyl]-propionamide 246 2-[(Benzofuran-2- 39 438 100 0 07 77 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- phenethyl-propion- amide 247 2-[(Benzofuran-2- 33 444 100 0 07 56 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (2-thiophen-2-yl- ethyl)-propionamide 248 2-[(Benzofuran-2- 37 442 100 0 07 6 ylmethyl)-amino]- N-(3-fluoro-benzyl)- 3-(1H-indol-3-yl)- propionamide 249 2-[(Benzofuran-2- 43 454 100 0 06 607 ylmethyl)-amino]- N-(2-hydroxy-1- phenyl-ethyl)-3- (1H-indol-3-yl)- propionamide 250 2-[(Benzofuran-2- 36 464 100 0 05 3413 ylmethyl)-amino]- N-(1H-benzo- imidazol-2-yl- methyl)-3-(1H- indol-3-yl)-propion- amide 251 2-[(Benzofuran-2- 4 428 95 0 06 129 ylmethyl)-amino]- N-(2-furan-2-yl- ethyl)-3-(1H-indol- 3-yl)-propionamide 252 2-[(Benzofuran-2- 37 438 100 0 07 33 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (3-methyl-benzyl)- propionamide 253 2-[(Benzofuran-2- 25 464 81 0 07 3327 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (1,2,3,4-tetrahydro- naphthalen-2-yl)- propionamide 254 2-[(Benzofuran-2- 37 424 100 0 06 22 ylmethyl)-amino]- N-benzyl-3-(1H- indol-3-yl)-propion- amide 255 2-[(Benzofuran-2- 41 468 100 0 07 9 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- [1-(4-methoxy- phenyl)-ethyl]- propionamide 256 2-[(Benzofuran-2- 5 440 68 0 05 >10,000 ylmethyl)-amino]- N-(2-hydroxy- benzyl)-3-(1H- indol-3-yl)-propion- amide 257 2-[(Benzofuran-2- 35 466 100 0 07 >10,000 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (2-methyl-2-phenyl- propyl)-propion- amide 258 2-[(Benzofuran-2- 38 458 100 0 07 46 ylmethyl)-amino]- N-(4-chloro- benzyl)-3-(1H- indol-3-yl)-propion- amide 259 2-[(Benzofuran-2- 39 452 100 0 07 21 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (1-phenyl-propyl)- propionamide 260 2-[(Benzofuran-2- 32 469 100 0 06 14 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (3-nitro-benzyl)- propionamide 261 2-[(Benzofuran-2- 31 414 100 0 06 406 ylmethyl)-amino]- N-furan-2-ylmethyl- 3-(1H-indol-3-yl)- propionamide 262 2-[(Benzofuran-2- 41 450 100 0 07 86 ylmethyl)-amino]- N-indan-1-yl-3- (1H-indol-3-yl)- propionamide 263 2-[(Benzofuran-2- 36 458 100 0 07 9 ylmethyl)-amino]- N-(3-chloro- benzyl)-3-(1H- indol-3-yl)-propion- amide 264 2-[(Benzofuran-2- 44 472 100 0 07 7 ylmethyl)-amino]- N-[1(4-chloro- phenyl)-ethyl]-3- (1H-indol-3-yl)- propionamide 265 2-[(Benzofuran-2- 41 452 96 0 07 328 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (1-methyl-1-phenyl- ethyl)-propionamide 266 2-[(Benzofuran-2- 39 442 100 0 07 633 ylmethyl)-amino]- N-bicyclo[2.2.1]- hept-2-ylmethyl-3- (1H-indol-3-yl)- propionamide 267 N-Benzo[1,3]- 40 468 100 0 06 55 dioxol-5-ylmethyl- 2-[(benzofuran-2- ylmethyl)-amino]-3- (1H-indol-3-yl)- propionamide 268 2-[(Benzofuran-2- 39 460 91 0 07 10 ylmethyl)-amino]- N-(3,4-difluoro- benzyl)-3-(1H- indol-3-yl)-propion- amide 269 2-[(Benzofuran-2- 9 439 92 0 04 9 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (1-pyridin-4-yl- ethyl)-propionamide 270 2-[(Benzofuran-2- 19 432 100 0 04 >10,000 ylmethyl)-amino]- N-(2-hydroxy-cyclo- hexyl)-3-(1H-indol- 3-yl)-propionamide 271 2-[(Benzofuran-2- 33 468 98 0 05 196 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- [2-(4-methoxy- phenyl)-ethyl]- propionamide 272 2-[(Benzofuran-2- 42 468 99 0 05 336 ylmethyl)-amino]- N-(1-hydroxy- methyl-2-phenyl- ethyl)-3-(1H-indol- 3-yl)-propionamide 273 2-[(Benzofuran-2- 15 432 99 0 04 >10,000 ylmethyl)-amino]- N-(4-hydroxy-cyclo- hexyl)-3-(1H-indol- 3-yl)-propionamide 274 2-[(Benzofuran-2- 21 456 97 0 05 264 ylmethyl)-amino]- N-[2-(2-fluoro- phenyl)-ethyl]-3- (1H-indol-3-yl)- propionamide 275 2-[(Benzofuran-2- 38 514 100 0 05 2157 ylmethyl)-amino]- N-(2-benzyl- sulfanyl-1-hydroxy- methyl-ethyl)-3- (1H-indol-3-yl)- propionamide 276 2-[(Benzofuran-2- 10 416 84 0 05 655 ylmethyl)-amino]- N-cyclohexyl-3- (1H-indol-3-yl)- propionamide 277 2-[(Benzofuran-2- 17 474 96 0 05 2198 ylmethyl)-amino]- N-(2-cyclohexyl-1- hydroxymethyl- ethyl)-3-(1H-indol- 3-yl)-propionamide 278 2-[(Benzofuran-2- 33 452 88 0 05 2379 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (3-phenyl-propyl)- propionamide 279 2-[(Benzofuran-2- 8 493 86 0 06 30 ylmethyl)-amino]- N-(3,4-dichloro- benzyl)-3-(1H- indol-3-yl)-propion- amide 280 2-[(Benzofuran-2- 25 477 97 0 05 2540 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- [2-(1H-indol-3-yl)- ethyl]-propionamide 281 2-[(Benzofuran-2- 28 483 93 0 05 51 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- [2-(4-nitro-phenyl)- ethyl]-propionamide 282 2-[(Benzofuran-2- 30 487 98 0 06 833 ylmethyl)-amino]- N-[2-(4-chloro- phenyl)-1-methyl- ethyl]-3-(1H-indol- 3-yl)-propionamide 283 2-[(Benzofuran-2- 9 492 91 0 06 420 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (4-trifluoromethyl- benzyl)-propion- amide 284 2-[(Benzofuran-2- 33 456 98 0 05 62 ylmethyl)-amino]- N-[2-(4-fluoro- phenyl)-ethyl]-3- (1H-indol-3-yl)- propionamide 285 2-[(Benzofuran-2- 32 483 99 0 05 246 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- [1-(4-nitro-phenyl)- ethyl]-propionamide 286 4-{[2-[(Benzofuran- 6 474 62 0 05 >10,000 2-ylmethyl)-amino]- 3-(1H-indol-3-yl)- propionylamino]- methyl}-cyclo- hexanecarboxylic acid 287 2-[(Benzofuran-2- 36 449 99 0 06 35 ylmethyl)-amino]- N-(cyano-phenyl- methyl)-3-(1H- indol-3-yl)-propion- amide 288 2-[(Benzofuran-2- 32 472 99 0 06 136 ylmethyl)-amino]- N-[2-(4-chloro- phenyl)-ethyl]-3- (1H-indol-3-yl)- propionamide 289 2-[(Benzofuran-2- 35 468 99 0 05 209 ylmethyl)-amino]- N-(1-hydroxy- methyl-2-phenyl- ethyl)-3-(1H-indol- 3-yl)-propionamide 290 2-[(Benzofuran-2- 37 517 100 0 06 8 ylmethyl)-amino]- N-[1-(4-bromo- phenyl)-ethyl]-3- (1H-indol-3-yl)- propionamide 291 2-[(Benzofuran-2- 29 468 96 0 05 1337 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- [2-(3-methoxy- phenyl)-ethyl]- propionamide 292 2-[(Benzofuran-2- 3 492 90 0 06 1126 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (2-trifluoromethyl- benzyl)-propion- amide 293 2-[(Benzofuran-2- 33 456 96 0 05 55 ylmethyl)-amino]- N-[2-(3-fluoro- phenyl)-ethyl]-3- (1H-indol-3-yl)- propionamide 294 2-[(Benzofuran-2- 15 444 86 0 06 58 ylmethyl)-amino]- N-(1-cyclohexyl- ethyl)-3-(1H-indol- 3-yl)-propionamide 295 2-[(Benzofuran-2- 34 482 99 0 06 3531 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (1-methoxymethyl- 2-phenyl-ethyl)- propionamide 296 2-[(Benzofuran-2- 16 484 98 0 06 1338 ylmethyl)-amino]- N-(2-benzyl- sulfanyl-ethyl)-3- (1H-indol-3-yl)- propionamide 297 2-[(Benzofuran-2- 36 491 100 0 05 3612 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- [2-(1H-indol-3-yl)- 1-methyl-ethyl]- propionamide 298 2-[(Benzofuran-2- 22 458 99 0 06 221 ylmethyl)-amino]- N-(2-chloro- benzyl)-3-(1H- indol-3-yl)- propionamide 299 2-[(Benzofuran-2- 28 454 93 0 05 4 ylmethyl)-amino]- N-(2-bydroxy-1- phenyl-ethyl)-3- (1H-indol-3-yl)- propionamide 300 2-[(Benzofuran-2- 10 452 98 0 06 256 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (2-p-tolyl-ethyl)- propionamide 301 2-[(Benzofuran-2- 12 460 98 0 06 53 ylmethyl)-amino]- N-(2,4-difluoro- benzyl)-3-(1H- indol-3-yl)-propion- amide 302 2-[(Benzofuran-2- 25 503 98 0 06 174 ylmethyl)-amino]- N-(2-bromo- benzyl)-3-(1H- indol-3-yl)- propionamide 303 2-[(Benzofuran-2- 7 510 88 0 06 17 ylmethyl)-amino]- N-(3-fluoro-5-tri- fluoromethyl- benzyl)-3-(1H- indol-3-yl)- propionamide 304 [2-[(Benzofuran-2- 36 482 100 0 06 43 ylmethyl)-amino]- 3-(1H-indol-3-yl)- propionylamino]- phenyl-acetic acid methyl ester 305 2-[(Benzofuran-2- 30 454 99 0 06 400 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (2-phenoxy-ethyl)- propionamide 306 N-(4-Amino- 32 439 99 0 04 639 benzyl)-2-[(benzo- furan-2-ylmethyl)- amino]-3-(1H- indol-3-yl)-propion- amide 307 2-[(Benzofuran-2- 36 466 99 0 06 392 ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (1-methyl-3-phenyl- propyl)-propion- amide 308 2-[(Benzofuran-2- 6 440 94 0 05 731 ylmethyl)-amino]- N-(3-hydroxy- benzyl)-3-(1H- indol-3-yl)- propionamide

TABLE 4 Examples 309-359 Yield Mol. Icms % Icms Rt IC₅₀ (nM) Ex. Name (mg) ion purity (min) hNK₁ 309 3-(1H-Indol-3-yl)-2-methyl-2- 30, 51 462 50 6, 44 169 [(naphthalen-2-ylmethyl)-amino]-N- (1-phenyl-ethyl)-propionamide 310 3-(1H-Indol-3-yl)2-methyl-N-(1- 37, 02 413 83 4, 74 3325 phenyl-ethyl)-2-[(pyridin-2- ylmethyl)-amino]-propionamide 311 3-(1H-Indol-3-yl)-2-methyl-N-(1- 31, 53 463 84 5, 96 88 phenyl-ethyl)-2-[(quinolin-2- ylmethyl)-amino]-propionamide 312 2-[(Furan-3-ylmethyl)-amino]-3- 28 402 78 4, 9  1820 (1H-indol-3-yl)-2-methyl-N-(1- phenyl-ethyl)-propionamide 313 3-(1H-Indol-3-yl)-2-methyl-N-(1- 41, 02 452  8 6, 02 50 phenyl-ethyl)-2-[(pyridin-4- ylmethyl)-amino]-propionamide 314 2-[(Furan-2-ylmethyl)-amino]-3- 27, 6  402 74 4, 82 141 (1H-indol-3-yl)-2-methyl-N-(1- phenyl-ethyl)-propionamide 315 3-(1H-Indol-3-yl)-2-methylN-(1-  3, 13 463 12 3, 78 1068 phenyl-ethyl)-2-[(quinolin-3- ylmethyl)-amino]-propionamide 316 2-[(1H-Benzoimidazol-2-ylmethyl)- 58, 59 452 16 4, 63 >10,000 amino]-3-(1H-indol-3-yl)-2-methyl- N-(1-phenyl-ethyl)-propionamide 317 3-(1H-Indol-3-yl)-2-[(5-methoxy- 33, 16 482 75 7, 29 >10,000 benzofuran-2-ylmethyl)-amino]-2- methyl-N-(1-phenyl-ethyl)- propionamide 318 3-(1H-Indol-3-yl)-2-[(isoquinolin-4-  8, 84 463 55 3, 28 1596 ylmethyl)-amino]-2-methyl-N-(1- phenyl-ethyl)-propionamide 319 3-(1H-Indol-3-yl)-2-[(6-methoxy-  5, 15 482 65 7, 22 2098 benzofuran-2-ylmethyl)-amino]-2- methyl-N-(1-phenyl-ethyl)- propionamide 320 3-(1H-Indol-3-yl)-2-methyl-N-(1- 20, 2  413 72 2, 51 5972 phenyl-ethyl)-2-[(pyridin-3- ylmethyl)-amino]-propionamide 321 2-{2-[2-(1,3-Dioxo-1,3-dihydro- 20, 67 552 96 0 05 3040 isoindol-2-yl)-acetylamino]- ethylamino}-3-(1H-indol-3-yl)-2- methyl-N-(1-phenyl-ethyl)- propionamide 322 2-(3-Furan-2-yl-allylamino)-3-(1H-  2, 88 428 47 0 05 91 indol-3-yl)-2-methyl-N-(1-phenyl- ethyl)-propionamide 323 3-(1H-Indol-3-yl)-2-methyl-N-(1- 28, 74 519 69 0 05 3183 phenyl-ethyl)-2-[2-(pyridin-2- ylmethoxy)-benzylamino]- propionamide 324 3-(1H-Indol-3-yl)-2-methyl-N-(1- 32, 96 519 88 0 04 2971 phenyl-ethyl)-2-[2-(pyridin-3- ylmethoxy)-benzylamino]- propionamide 325 3-(1H-Indol-3-yl)-2-methyl-N-(1- 42, 66 504 77 0 06 72 phenyl-ethyl)-2-[(5-styryl-furan-2- ylmethyl)-amino]-propionamide 326 2-(4-Chloro-3-methylsulfamoyl-  8, 05 539 83 0 05 4827 benzylamino)-3-(1H-indo1-3-yl)-2- methyl-N-(1-phenyl-ethyl)- propionamide 327 5-(4-{[2-(1H-Indol-3-yl)-1-methyl-  7, 02 556 92 0 05 >10,000 1-(1-phenyl-ethylcarbamoyl)- ethylamino]-methyl}-phenoxy)-2,2- dimethyl-pentanoic acid 328 3-(1H-Indol-3-yl)-2-methyl-2-{[4- 17, 49 498 86 0 07 >10,000 (4-methyl-pent-2-enyl)-cyclohex-3- enylmethyl]-amino}-N-(1-phenyl- ethyl)-propionamide 329 (2-{[2-(1H-Indol-3-yl)-1-methyl-1- 16, 92 499 95 0 05 4188 (1-phenyl-ethylcarbamoyl)- ethylamino]-methyl}-phenyl)- carbamic acid ethyl ester 330 2-(4-Chloro-2-methylsulfamoyl-  7, 56 539 89 0 05 1100 benzylamino)-3-(1H-indol-3-yl)-2- methyl-N-(1-phenyl-ethyl)- propionamide 331 2-[4-(2-Dimethylamino-ethoxy)- 24, 9  499 65 0 03 >10,000 benzylamino]-3-(1H-indol-3-yl)-2- methyl-N-(1-phenyl-ethyl)- propionamide 332 2-(2,3-Diphenyl-propylamino)-3- 10, 84 516 98 0 06 4944 (1H-indol-3-yl)-2-methyl-N-(1- phenyl-ethyl)-propionamide 333 3-(1H-Indol-3-yl)-2methyl-N-(1- 16, 98 516 98 0 06 3606 phenyl-ethyl)-2-[(1-phenyl-1H- indol-2-ylmethyl)-amino]- propionamide 334 3-(1H-Indol-3-yl)-2-methyl-N-(1- 19, 88 527 74 0 06 >10,000 phenyl-ethyl)-2-[4-(4-phenyl- piperidin-1-yl)-benzylamino]- propionamide 335 3-(1H-Indol-3-yl)-2-methyl-N-(1- 38, 16 571 65 0 06 >10,000 phenyl-ethyl)-2-[4-(2-pyrrolidin-1- yl-ethoxy)-benzylamino]- propionamide 336 2-(4-Chloro-3-sulfamoyl- 5, 2 525 79 0 03 4229 benzylamino)-3-(1H-indol-3-yl)-2- methyl-N-(1-phenyl-ethyl)- propionamide 337 4-{[2-(1H-Indol-3-yl)-1-methyl-1- 20, 24 525 81 0 04 1920 (1-phenyl-ethylcarbamoyl)- ethylamino]-methyl}-benzoic acid methyl ester 338 2-(2,3-Diphenyl-allylamino)-3-(1H- 20, 13 470 99 0 05 >10,000 indol-3-yl)-2-methyl-N-(1-phenyl- ethyl)-propionamide 339 2-(3-Benzo[1,3]dioxol-5-yl- 24, 74 514 54 0 06 343 allylamino)-3-(1H-indol-3-yl)-2- methyl-N-(1-phenyl-ethyl)- propionamide 340 2-[3-(4-Benzyloxy-phenyl)- 24, 64 482 72 0 05 4912 allylamino]-3-(1H-indol-3-yl)-2- methyl-N-(1-phenyl-ethyl)- propionamide 341 2-(4-Benzyloxy-benzylamino)-3- 32, 02 544 62 0 06 >10,000 (1H-indol-3-yl)-2-methyl-N-(1- phenyl-ethyl)-propionamide 342 Toluene-4-sulfonic acid 3-{[2-(1H- 20, 65 518 96 0 06 5091 indol-3-yl)-1-methyl-1-(1-phenyl- ethylcarbamoyl)-ethylamino]- methyl}-phenyl ester 343 2-[(Benzofuran-2-ylmethyl)-amino]- 23, 9  582 93 0 06 13 3-(1H-indol-3-yl)-2-methyl-N-(1- phenyl-ethyl)-propionamide 344 2-(3-Benzyloxy-benzylamino)-3- 33, 15 518 89 0 06 185 (1H-indol-3-yl)-2-methyl-N-(1- phenyl-ethyl)-propionamide 345 3-(1H-Indol-3-yl)-2-methyl-2-(4- 31, 61 458 90 0 06 609 methylsulfanyl-benzylamino)-N-(1- phenyl-ethyl)-propionamide 346 2-[(Anthracen-9-ylmethyl)-amino]- 17, 46 512 73 0 07 >10,000 3-(1H-indol-3-yl)-2-methyl-N-(1- phenyl-ethyl)-propionamide 347 3-(1H-Indol-3-yl)-2-methyl-2-(4- 36, 52 504 95 0 06 3382 phenoxy-benzylamino)-N-(1-phenyl- ethyl)-propionamide 348 2-[(Biphenyl-4-ylmethyl)-amino]-3- 30, 82 488 93 0 06 5562 (1H-indol-3-yl)-2-methyl-N-(1- phenyl-ethyl)-propionamide 349 2-[(Benzo[1,3]dioxol-5-ylmethyl)- 33, 19 456 94 0 06 356 amino]-3-(1H-indol-3-yl)-2-methyl- N-(1-phenyl-ethyl)-propionamide 350 2-[2-(4-Chloro-phenylsulfanyl)- 21, 92 554 90 0 07 >10,000 benzylamino]-3-(1H-indol-3-yl)-2- methyl-N-(1-phenyl-ethyl)- propionamide 351 3-(1H-Indol-3-yl)-2-methyl-N-(1- 22, 24 514 88 0 07 >10,000 phenyl-ethyl)-2-(4-styryl- benzylamino)-propionamide 352 2-(2,6-Dimethyl-octa-2,6- 30, 03 458 44 0 07 2212 dienylamino)-3-(1H-indol-3-yl)-2- methyl-N-(1-phenyl-ethyl)- propionamide 353 3-(1H-Indol-3-yl)-2-methyl-2-{[5- 38, 51 523 82 0 06 13 (4-nitro-phenyl)-furan-2-ylmethyl]- amino}-N-(1-phenyl-ethyl)- propionamide 354 2-[(9H-Fluoren-2-ylmethyl)-amino]- 27, 91 500 92 0 06 1731 3-(1H-indol-3-yl)-2-methyl-N-(1- phenyl-ethyl)-propionamide 355 3-(1H-Indol-3-yl)-2-[(1H-indol-3-  9, 83 451 69 0 06 1047 ylmethyl)-amino]-2-methyl-N-(1- phenyl-ethyl)-propionamide 356 3-(1H-Indol-3-yl)-2-methyl-2-(2- 33, 02 508 86 0 07 >10,000 pentyl-3-phenyl-allylamino)-N-(1- phenyl-ethyl)-propionamide 357 3-(1H-Indol-3-yl)-2-methyl-N-(1- 18, 91 418 97 0 05 548 phenyl-ethyl)-2-[(thiophen-2- ylmethyl)-amino]-propionamide 358 3-(1H-Indol-3-yl)-2-methyl-N-(1- 18, 79 418 99 0 05 598 phenyl-ethyl)-2-[(thiophen-3- ylmethyl)-amino]-propionamide 359 3-(1H-Indol-3-yl)-2-methyl-N-(1-  7, 47 413 79 0 04 3712 phenyl-ethyl)-2-[(pyridin-4- ylmethyl)-amino]-propionamide

TABLE 5 Examples 360-405 Yield Mol. Icms % Icms Rt IC₅₀ (nM) Ex. (mg) ion purity (min) hNK₁ 360 2-(3-Furan-2-yl- 12, 414 59 0 06 >10,000 allylamino)-3-(1H- 16 indo)-3-yl)-N-(1- phenyl-ethyl) propionamide 361 3-(1H-Indol-3-yl)- 14, 505 79 0 04 729 N-(1-phenyl-ethyl)- 01 2-[2-(pyridin-3- ylmethoxy)-benzyl- amino]-propion- amide 362 3-(1H-Indol-3-yl)- 39, 490 36 0 08 >10,000 N-(1-phenyl-ethyl)- 92 2-[(5-styryl-furan-2- ylmethyl)-amino]- propionamide 363 2-(4-Chloro-3- 18, 8 526 86 0 06 490 methylsulfamoyl- benzylamino)-3- (1H-indol-3-yl)-N- (1-phenyl-ethyl)- propionamide 364 5-(4-{[2-(1H-Indol- 12, 543 79 0 07 1247 3-yl)-1-(1-phenyl- 49 ethylcarbamoyl)- ethylamino]- methyl}-phenoxy)- 2,2-dimethyl- pentanoic acid 365 2-{[4-(4-Hydroxy- 31, 503 42 0 07 5278 4-methyl-pentyl)- 21 cyclohex-3-enyl- methyl]-amino}-3- (1H-indol-3-yl)-N- (1-phenyl-ethyl)- propionamide 366 3-(1H-Indol-3-yl)-2- 38, 484 65 0 09 4046 {[4-(4-methyl-pent- 13 2-enyl)-cyclohex-3- enylmethyl)- amino}-N-(1- phenyl-ethyl)- propionamide 367 (2-{[2-(1H-Indol-3- 4, 86 485 82 0 07 236 yl)-1-(1-phenyl- ethylcarbamoyl)- ethylamino]- methyl}-phenyl)- carbamic acid ethyl ester 368 2-(2-Chloro-4- 14, 518 84 0 07 2239 morpholin-4-yl- 38 benzylamino)-3- (1H-indol-3-yl)-N- (1-phenyl-ethyl)- propionamide 369 2-(4-Chloro-2- 53, 526 83 0 06 450 methylsulfamoyl- 07 benzylamino)-3- (1H-indol-3-yl)-N- (1-phenyl-ethyl)- propionamide 370 2-(2,3-Diphenyl- 11, 502 73 0 08 534 propylamino)-3- 18 (1H-indol-3-yl)-N- (1-phenyl-ethyl)- propionamide 371 3-(1H-Indol-3-yl)- 16, 466 66 0 07 >10,000 2-[(4-oxo-4H- 18 chromen-3-yl- methyl)-amino]-N- (1-phenyl-ethyl)- propionamide 372 3-(1H-Indol-3-yl)-2- 9 523 26 0 08 >10,000 [(1-oxo-1,2,3,9- tetrahydro-4-thia-9- aza-fluoren-2-yl- methyl)-amino]-N- (1-phenyl-ethyl)- propionamide 373 3-(1H-Indol-3-yl)- 17, 506 2 0 07 507 2-[(5-methyl-4-oxo- 38 6-phenyl-4H-pyran- 3-ylmethyl)-amino]- N-(1-phenyl-ethyl)- propionamide 374 4-{[2-(1H-Indol- 33, 456 95 0 06 1914 3-yl)-1-(1-phenyl- 82 ethylcarbamoyl)- ethylamino]- methyl}-benzoic acid methyl ester 375 3-(1H-Indol-3-yl)- 28, 495 76 0 05 165 N-(1-phenyl-ethyl)- 55 2-[(2-propyl-5- pyrrol-1-yl-3H- imidazol-4-yl- methyl)-amino]- propionamide 376 2-(2,3-Diphenyl- 14, 500 76 0 08 >10,000 allylamino)-3-(1H- 27 indol-3-yl)-N-(1- phenyl-ethyl)- propionamide 377 2-(3-Benzo[1,3]- 14, 468 57 0 07 593 dioxol-5-yl-allyl- 52 amino)-3-(1H-indol- 3-yl)-N-(1-phenyl- ethyl)-propionamide 378 2-[3-(4-Benzyloxy- 8, 68 530 64 0 09 932 phenyl)-allylamino]- 3-(1H-indol-3-yl)- N-(1-phenyl-ethyl)- propionamide 379 2-(4-Benzyloxy- 15, 504 80 0 08 587 benzylamino)-3- 05 (1H-indol-3-yl)- N-(1-phenyl-ethyl)- propionamide 380 3-(1H-Indol-3-yl)-2- 11, 476 46 0 08 500 (3-naphthalen-1-yl- 18 propylamino)-N-(1- phenyl-ethyl)- propionamide 381 Toluene-4-sulfonic 24, 568 92 0 08 >10,000 acid 3-{[2-(1H- 84 indol-3-yl)-1-(1- phenyl-ethyl- carbamoyl)-ethyl- amino]-methyl}- phenyl ester 382 2-(3-Benzyloxy- 44, 504 91 0 08 >10,000 benzylamino)-3- 62 (1H-indol-3-yl)-N- (1-phenyl-ethyl)- propionamide 383 3-(1H-Indol-3-yl)- 39, 444 69 0 07 252 2-(4-methylsulfanyl- 33 benzylamino)-N-(1- phenyl-ethyl)- propionamide 384 3-(1H-Indol-3-yl)-2- 32, 490 83 0 08 2350 (4-phenoxy-benzyl- 52 amino)-N-(1- phenyl-ethyl)- propionamide 385 2-[(Biphenyl-4-yl- 24, 474 90 0 08 1463 methyl)-amino]-3- 28 (1H-indol-3-yl)-N- (1-phenyl-ethyl)- propionamide 386 2-[(Benzo[1,3]- 41, 442 78 0 06 240 dioxol-5-ylmethyl)- 91 amino]-3-(1H-indol- 3-yl)-N-(1-phenyl- ethyl)-propionamide 387 2-[2-(4-Chloro- 48, 541 96 0 09 201 phenylsulfanyl)- 88 benzylamino]-3- (1H-indol-3-yl)-N- (1-phenyl-ethyl)- propionamide 338 3-(3H-Indol-3-yl)- 12, 500 66 0 09 >10,000 N-(1-phenyl-ethyl)- 14 2-(4-styryl-benzyl- amino)-propion- amide 389 2-(2,6-Dimethyl- 50, 444 5 0 08 2573 octa-2,6-dienyl- 41 amino)-3-(1H-indol- 3-yl)-N-(1-phenyl- ethyl)-propionamide 390 3-(1H-Indol-3-yl)-2- 7, 86 509 44 0 07 50 {[5-(4-nitro- phenyl)-furan-2-yl- methyl]-amino}- N-(1-phenyl-ethyl)- propionamide 391 2-[(9H-Fluoren-2- 37, 486 85 0 08 846 ylmethyl)-amino]-3- 84 (1H-indol-3-yl)-N- (1-phenyl-ethyl)- propionamide 392 2-[(2,5-Dimethyl-1- 5, 27 491 3 0 08 >10,000 phenyl-1H-pyrrol-3- ylmethyl)-amino]-3- (1H-indol-3-yl)-N- (1-phenyl-ethyl)- propionamide 393 3-(1H-Indol-3-yl)- 03 2 399 71 0 04 802 N-(1-phenyl-ethyl)- 2-[(pyridin-3-yl- methyl)-amino)- propionamide 394 3-(1H-Indol-3-yl)-2- 03 7 448 88 0 06 158 [(naphthalen-2-yl- methyl)-amino]-N- (1-phenyl-ethyl)- propionamide 395 3-(1H-Indol-3-yl)- 02 9 399 74 0 05 >10,000 N-(1-phenyl-ethyl)- 2-[(pyridin-2-yl- methyl)-amino]- propionamide 396 3-(1H-Indol-3-yl)- 04 3 404 98 0 05 1073 N-(1-phenyl-ethyl)- 2-[(thiophen-2-yl- methyl)-amino]- propionamide 397 2-(3,4-Dimethoxy- 03 3 458 65 0 05 >10,000 benzylamino)-3- (1H-indol-3-yl)-N- (1-phenyl-ethyl)- propionamide 398 2-(3,5-Bis-trifluoro- 04 3 534 94 0 07 >10,000 methyl-benzyl- amino)-3-(1H-indol- 3-yl)-N-(1-phenyl- ethyl)-propionamide 399 2-(3,5-Difluoro- 03 5 434 92 0 06 140 benzylamino)-3- (1H-indol-3-yl)-N- (1-phenyl-ethyl)- propionamide 400 2-(3-Chloro-benzyl- 03 4 432 86 0 06 13 amino)-3-(1H-indol- 3-yl)-N-(1-phenyl- ethyl)-propionamide 401 2-(3-Fluoro-benzyl- 03 4 416 87 0 06 39 amino)-3-(1H-indol- 3-yl)-N-(1-phenyl- ethyl)-propionamide 402 2-[(Furan-3-yl- 03 0 388 84 0 05 881 methyl)-amino]-3- (1H-indol-3-yl)-N- (1-phenyl-ethyl)- propionamide 403 3-(1H-Indol-3-yl)- 0 07 426 85 0 06 3907 N-(1-phenyl-ethyl)- 2-(3-phenyl-propyl- amino)-propion- amide 404 3-(1H-Indol-3-yl)- 03 2 404 81 0 05 2390 N-(1-phenyl-ethyl)- 2-[(thiophen-3-yl- methyl)-amino]- propionamide 405 2-[(Furan-2-yl- 03 2 388 86 0 06 429 methyl)-amino]-3- (1H-indol-3-yl)-N- (1-phenyl-ethyl)- propionamide

As noted above, the compounds of formula I will be best utilized in the form of pharmaceutical formulations. The following examples further illustrate specific formulations that are provided by the invention.

EXAMPLE 406

Ingredient Amount 3-[(benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-2- 50 mg methyl-N-(1-phenyl-ethyl)-propionamide,[(R-(R*,S*)] potato starch 100 mg talc 50 mg magnesium carbonate 20 mg dextrose 20 mg 240 mg

The above ingredients are blended to uniformity and pressed into a tablet. Such tablets are administered to human subjects from one to four times a day for treatment of pain, depression and schizophrenia.

EXAMPLE 407

Ingredient Amount The compound of Example 5 200 mg Corn starch 100 mg Sodium benzoate 10 mg talc 50 mg 360 mg

The ingredients are blended to uniformity and encapsulated into gelatin telescoping capsules. The capsules are administered to a human at the rate of one to three each day for treatment of rheumatoid arthritis, atheroclerosis, aberrant neovascularization, and for the inhibition of tumor cell growth. 

We claim:
 1. A compound of Formula I

and the pharmaceutically acceptable salt thereof, wherein ▪, , ▴, indicate all stereoisomers, R is: furyl benzofuryl, or benzoxazolyl, wherein each of the foregoing is unsubstitute, mono-, di- or trisubstituted by alkyl, hydroxy, alkoxy, halogen, —CF₃, carboxy, sulfonamide, or nitro; R¹ and R² are each independently H or C₁-C₄ alkyl; m is an integer from 0 to 3; X is NR⁸ where R⁸ is H or C₁-C₄alkyl; R³ is hydrogen or C₁-C₄ alkyl; n is an integer from 1 to 2; R⁴ is indolyl, wherein said groups are substituted, mono, di- or trisubstituted by alkyl, hydroxy or formyl; R⁹ is hydrogen or C₁-C₄ alkyl; R⁵ and R⁷ are each independently hydrogen or (CH₂)_(p)R¹⁰ where: p is an integer of 1 to 3, and R¹⁰ is H, CH₃, CN, OH, OCH₃, CO₂CH₃, NH₂, NHCH₃, or N(CH₃)₂; q is integer of 0 to 4; R⁶ is phenyl, wherein the foregoing is unsubstituted, mono-, di- or trisubstituted by alkyl, hydroxy, alkoxy, halogen, CF₃, NO₂, N(CH₃)₂, OCF₃, SONH₂, NH₂, CONH₂, CO₂CH₃, or CO₂H, and R⁵ and R⁶ when joined by a bond, can form a ring.
 2. A compound of claim 1 wherein R is selected from: furyl, benzofuryl, benzoxazolyl, wherein each of the foregoing is unsubstituted, mono-, di- or trisubstituted by alkyl, hydroxy, alkoxy, halogen, or CF₃; m is an integer from 1 to 3; R⁶ is phenyl, wherein the foregoing is a unsubstituted, mono-, di- or trisubstituted by alkyl, hydroxy, alkoxy, halogen, CF₃, NO₂, N(CH₃)₂, OCF₃, SON₂, NH₂, CONH₂, CO₂CH₃, or CO₂H, cycloalkyl of from 5 to 6 carbons or heterocycloalkyl, with up to one or two substituents selected from OH, CO₂H, N(CH₃)₂, NHCH₃ and CH₃; and R⁵ and R⁶ when joined by a bond can form a ring.
 3. A compound according to claim 2 wherein R¹ and R² each are hydrogen.
 4. A compound according to claim 3 wherein X is NR⁸.
 5. A compound according to claim 4, wherein R is furyl, benzofuryl, or benzoxazolyl, where each of the foregoing is unsubstituted, mono-, di- or trisubstituted by alkyl, hydroxy, alkoxy, halogen, or —CF₃; R¹ and R² are each H; m is a integer from 1 to 3; X is NR⁸, where R⁸ is H or methyl; R⁹ is hydrogen or alkyl of 1 to 3 carbon atoms; R⁶ is phenyl where the foregoing is unsubstituted, mono-, di- or trisubstituted by alkyl, hydroxy, alkoxy, halogen, CF₃, NO₂, or N(CH₃)₂; cyclohexyl or heterocycloalkyl, with up to one or two substituents selected from OH, CO₂H, N(CH₃)₂, NHCH₃ and CH₃; and R⁵ and R⁶, when joined by a bond, can form a ring.
 6. A compound of the Formula II

wherein: R is benzofuryl, or benzoxazolyl; R³ is hydrogen or methyl; X is NH or NHCONH; R⁵ and R⁷ independently are hydrogen or CH₂R¹⁰, where R¹⁰ is H, CH₃ or OH; R⁶ is phenyl; and the pharmaceutically acceptable salts thereof.
 7. A compound of claim 6 selected from: 2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]; 2-[Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-2-methyl-N-[1-(4-nitro-phenyl)-ethyl]-propionamide, [R-(R*,R*)]; 2-(Benzofuran-2-ylmethyl)-amino]-N-(2-hydroxy-1-phenyl-ethyl)-3-(1H-indol-3-yl)-2-methyl-propionamide, [R-(R*,R*)]; [R-(R*,S*)]2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-2methyl-N-(1-p-tolyl-ethyl)-propionamide; 2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-N-(1-p-tolyl-ethyl)-propionamide, [R-(R*,S*)]; 2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]; 2-[(Benzoxazol-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide; 2-(2-Benzofuran-2-yl-ethylamino)-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]; and 2-(3-Benzofuran-2-ylmethyl-ureido)-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)].
 8. A pharmaceutical formulation comprising a compound of claim 1 admixed with a pharmaceutical acceptable diluent, carrier or excipient.
 9. A formulation according to claim 8 employing a compound of Formula II

wherein: R is benzofuryl, or benzoxazolyl; R³ is hydrogen or methyl; X is NH or NHCONH; R⁵ and R⁷ independently are hydrogen or CH₂R¹⁰, where R¹⁰ is H, CH₃ or OH; R⁶ is phenyl; and the pharmaceutically acceptable salts thereof.
 10. A formulation according to claim 9 employing a compound selected from: 2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]; 2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-2-methyl-N-[1-(4-nitro-phenyl)-ethyl]-propionamide, [R-(R*,R*)]; 2-[(Benzofuran-2-ylmethyl)-amino]-N-(2-hydroxy-1-phenyl-ethyl)-3-(1H-indol-3-yl)-2-methyl-propionamide, [R-(R*,R*)]; [R-(R*,S*)]2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-2-methyl-N-(1-p-tolyl-ethyl)-propionamide; 2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-N-(1-p-tolyl-ethyl)-propionamide, [R-(R*,S*)]; 2-[(Benzofuran-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)]; 2-[(Benzooxazol-2-ylmethyl)-amino]-3-(1H-indol-3-yl)-N-(1-phenyl-ethyl)propionamide; 2-(2Benzofuran-2-yl-ethylamino)-3-(1H-indol-3yl)-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)] and 2-(3-Benzofuran-2-ylmethyl-ureido)-3-(1H-indol-3-yl)-2-methyl-N-(1-phenyl-ethyl)-propionamide, [R-(R*,S*)].
 11. A method for antagonizing the NK₁ receptor in a mammal comprising administering a compound of claim
 1. 12. A method for treating a CNS disorder in a mammal in need of treatment comprising administering an effective amount of a compound of claim
 1. 13. A method according to claim 12 wherein the CNS disorder is selected from pain, anxiety, depression or schizophrenia.
 14. A method according to claim 12 wherein the CNS disorder is selected from neuralgia, stress, sexual dysfunction, bipolar disorders, movement disorders, cognitive disorders, obesity, and addiction disorders.
 15. A method for treating an allergic or inflammatory disorder in a mammal in need of treatment comprising administering an effective amount of a compound of claim
 1. 16. A method according to claim 15 wherein the allergic or inflammatory disorder is selected from arthritis, asthma, bronchitis, psoriasis, eczema, rhinitis, colitis or Crohn's disease.
 17. A method for treating a neuropathological disorder in a mammal in need of treatment comprising administering an effective amount of a compound of claim
 1. 18. A method according to claim 17 wherein the neuropathological disorder is selected from scleroderma or emesis. 